Quick Answer: A portable container scale bench installation in Ontario uses four wheel-weight pads or two axle pads under a packed shipping container’s chassis to record a Measurement Canada legal-for-trade weight onsite. Expect a self-contained kit with no civil foundation, calibration every twelve months, and full SOLAS VGM compliance. The LeBlanc family has run Van Blanc Ent. Inc. since 1995, with 124+ verified Google reviews at 4.9 stars and 1-3 day delivery across Ontario.
In This Guide
- Why Choose a Portable Scale Bench Over a Trip to the Weighbridge?
- How Do Wheel-Weight Pads Measure a Packed Container?
- Which Scale Brands Are Measurement Canada Approved?
- How Long Does a Portable Scale Bench Installation Take?
- How Often Does a Scale Bench Need Calibration and Certification?
- What Pad Capacity Does a Packed 20ft or 40ft Box Need?
- Are Onsite Pads or a CAT Scale Trip Cheaper?
- Paul on the day a yard buys its first set of pads
- How Does an Ontario Yard Choose a Scale Kit?
- What Mistakes Do Ontario Yards Make on a First Install?
- Frequently asked questions
- Reach Van Blanc in Brantford
Reading time: about 15 minutes.
Why Choose a Portable Scale Bench Over a Trip to the Weighbridge?
A portable container scale bench keeps the weighing in your own yard instead of on the road. A yard chooses it over a weighbridge trip because every loaded chassis is weighed the moment it is packed, with no queue, no per-ticket fee, and no gap between packing and the certified weight a carrier needs.
Ontario shippers who pack their own boxes otherwise drive the loaded chassis to a weighbridge, queue behind grain trucks, pay for a CAT-scale ticket, and hope the number matches the dock receipt. For a yard shipping four or five loaded boxes a day, the math stops working before lunch.
The portable container scale bench answers that. Four wheel-weight pads on a level gravel surface, a wireless indicator, and weighing happens in the yard between the packing crew finishing the last skid and the carrier hooking the chassis. A Cardinal 760PS/PA pad set, an Intercomp PT300DW, or a SellEton Load Ranger all deliver legal-for-trade weighing without an in-ground pit. The same yards often buy the box itself from us first, then add a scale once they are shipping enough volume to justify it; if you are still deciding which size to pack, our team can talk through the standard box footprints a yard packs most before you ever spec a pad set.
Christian LeBlanc, second-generation operator: “The first question a shipper asks me is never about the load cells. It is, can I weigh in my own yard without driving to a bridge. The answer is yes, the pads sit on gravel, and you weigh between packing the last skid and hooking the chassis. Most people are surprised how little there is to it.”
Two scale categories that get confused
A wheel-weight pad scale sits flat on the ground, the truck rolls one wheel onto each pad, and four pads sum to gross. A portable axle scale is a longer beam that takes a full axle group at once. Both are portable. Both are Measurement Canada legal-for-trade when certified. Wheel pads cost less and read every corner. Axle scales weigh faster and are the default at temporary job sites. For a container yard with one to ten boxes a day, wheel pads are the more flexible choice.
How Do Wheel-Weight Pads Measure a Packed Container?
Wheel-weight pads measure a packed container one tire at a time and add the corners together. Each pad is a thin steel sandwich (2 to 3 inches tall, 16 to 24 inches square) with four shear-beam load cells bonded into the corners. The truck rolls one tire onto each pad, the cells compress in proportion to the wheel load, and a calibrated indicator reads the sum. Eight pads under a tandem-axle chassis give you the gross vehicle weight. Subtract the chassis and container tares (door plate and chassis registration) and you have the cargo weight for the VGM declaration.
The load cells are accurate to ±0.1% at the cell level. Measurement Canada certification sets the system tolerance at ±20 lb per 1,000 lb (2%) at first verification, tightening to ±10 lb per 1,000 lb (1%) on annual recertification. That sits well inside the Canadian SOLAS VGM enforcement threshold of ±5% in TP 15330.
What a packed Ontario container actually weighs
A loaded 20ft dry box leaving an Ontario yard for the Port of Montreal typically lands between 14,000 and 24,000 kg gross. A loaded 40ft high cube ranges 18,000 to 30,480 kg (the ISO maximum). The chassis adds about 3,500 to 4,500 kg depending on suspension. Your portable pad set needs to handle the heaviest combination you will weigh, which is usually a packed 40HC reefer with the chassis (around 38,000 kg, or 84,000 lb). Cardinal 760PS pads at 60,000 lb each clear that without flinching. Intercomp PT300DW pads at 40,000 lb per wheel clear it as well. Lower-capacity pads (20,000 lb per wheel) work for 20ft boxes only, and the operator has to know that limit cold before the first weigh.
Which Scale Brands Are Measurement Canada Approved?
The portable scale brands an Ontario yard sees most are Cardinal, Intercomp, SellEton, and Right-Weigh, and the first three carry Measurement Canada approval for legal-for-trade use. Three manufacturers dominate the Ontario portable-pad market, and one operates a slightly different category.
Cardinal Scale Manufacturing (Webb City MO) builds the 760PS (steel) and 760PA (aluminum) wheel-pad sets. The 760PA at 400 pounds per platform is the lightest 60,000-lb-rated pad sold in North America. NTEP, Measurement Canada, and OIML certified. A complete four-pad kit ships with the wireless 225 indicator and steel ramps included.
Intercomp Company (Medina MN) builds the PT300 and PT300DW lines. The PT300 reads to 20,000 lb per wheel with ±1% accuracy. The PT300DW reads to 40,000 lb per wheel and is the recommended pad for full container chassis work. Wireless head, hot-swap batteries, and ramps are included, with the landed cost driven by the exchange rate and freight from Minnesota.
Right-Weigh Onboard Scales (Tualatin OR) is the brand for a permanent onboard scale on the chassis instead of a portable pad. Right-Weigh measures suspension air-bag pressure on air-ride trailers and reads on a cab display. It is the fast-read option, not Measurement Canada legal-for-trade, which means it works for pre-trip checks but cannot be the sole instrument on a SOLAS VGM declaration. Many Ontario shippers run a Right-Weigh in the cab plus a portable pad set in the yard.
SellEton Scales distributes the Load Ranger wireless wheel-pad scale at the entry-price end. NTEP certified and accepted by Measurement Canada once verified by a registered service organization. It sits at the most affordable end of the range through Canadian distributors.
Verify the certification chain before you buy
An NTEP-stamped pad is not automatically legal for trade in Canada. The pad must carry a Measurement Canada Notice of Approval, the installation has to be inspected by an Accredited Authorized Service Provider, and the indicator must read in the units (kg or lb) appropriate to the trade transaction. The shortest verification path: ask the distributor for the Measurement Canada Notice of Approval number before placing the order, then book the initial inspection with a Brantford-area or Hamilton-area service provider during the same week the pads arrive.
How Long Does a Portable Scale Bench Installation Take?
A portable scale bench installation takes about a half-day on a prepared site: a couple of hours to lay and connect the pads, then a Measurement Canada inspection. The phrase “installation” suggests a contractor crew. For a portable pad set, the actual work is closer to unboxing a refrigerator. The yard work that matters happens before the pads arrive.
The pad set needs a level, hard surface. Concrete is best. Compacted granular A is acceptable. Soft asphalt in July is not. The footprint of a four-pad layout for a tandem-axle chassis is roughly 12 feet wide by 28 feet long, with 30 feet of straight approach and 30 feet of straight runout, or about the same footprint as parking a single 53ft trailer.
The prep work is making sure the four pad locations sit coplanar within a quarter-inch over the 12-foot wheelbase. A landscape contractor with a laser level and a tonne of stone dust gets this done in a morning. The pads come out of the crate, lay on the spots, plug into the junction box, and the wireless indicator pairs in under fifteen minutes. Measurement Canada’s Accredited Authorized Service Provider then witnesses a zero-load, a known-reference, and a first-real-load weigh, signs the Notice of Verification, and applies the inspection sticker. Allow about half a day total.
The pre-arrival checklist that saves the install day
- Pad footprint marked: Spray-paint four 24×24-inch squares at your most-weighed chassis wheelbase.
- Granular A under each spot: Six inches compacted, level within a quarter-inch with a laser level.
- Approach and runout clear: Thirty feet straight in, thirty feet straight out. Curving creates lateral load that throws corner readings.
- Power for the indicator: Waterproof outlet or marine-grade battery box for the wireless head.
- Service appointment booked: The Accredited Authorized Service Provider visit is what turns the pads of electronics into a legal-for-trade instrument. Book for the day pads arrive.
How Often Does a Scale Bench Need Calibration and Certification?
A portable scale bench needs calibration and certification once a year. Measurement Canada legal-for-trade certification is not a one-time event. The scale gets verified at install, then re-verified annually by an Accredited Authorized Service Provider. The provider arrives with certified test weights (usually 2,000 lb of M-class steel blocks on a forklift), runs a calibration sweep across the pad range, adjusts the indicator’s gain and offset values, and applies the new yearly sticker. The annual visit is a routine service call in the Brantford and Hamilton area, with the cost set by travel distance and the number of test weights required. Most yards combine pad recertification with their forklift annual inspection to share the trip charge. The sticker is what an MTO inspector or a port auditor checks. No sticker, no legal weight.
Why the load cells drift
Shear-beam load cells are high-strength steel with foil strain gauges bonded by epoxy to the load-bearing surface. The assembly lives outside in a Brantford yard through freeze-thaw, road salt, and vibration. Over a year, the gauge bond stiffens and the output voltage shifts by 0.1 to 0.3 percent. That is invisible on a 1,000-lb load. It is 200 lb of error on a 30,000-lb container. The annual recertification catches the drift and resets the offset.
What Pad Capacity Does a Packed 20ft or 40ft Box Need?
Pad capacity for a packed box is set by the heaviest single wheel, not the gross weight. A 20ft-only yard can run 20,000-lb pads, while any yard weighing a loaded 40HC reefer needs 40,000-lb pads. The most common pad-spec mistake is buying a 20,000-lb-per-wheel kit and discovering on the second weigh that the chassis tandem behind a packed 40ft box runs the load cell at 92% of capacity. The reading comes in fine. There is no safety margin for the day someone packs the box 5% heavier than usual. The math to do before buying:
| Configuration | Gross Weight | Heaviest Wheel | Minimum Pad Rating |
|---|---|---|---|
| Empty 20ft chassis + box | ~8,500 kg / 18,750 lb | ~2,500 lb | 20,000 lb (PT300) |
| Loaded 20ft (typical) | ~22,000 kg / 48,500 lb | ~6,500 lb | 20,000 lb (PT300) |
| Loaded 20ft (max ISO) | ~30,480 kg / 67,200 lb | ~8,500 lb | 20,000 lb (PT300) |
| Loaded 40ft HC (typical) | ~26,000 kg / 57,300 lb | ~7,500 lb | 20,000 lb (PT300) |
| Loaded 40ft HC (max ISO) | ~32,500 kg / 71,650 lb | ~9,500 lb | 20,000 lb (PT300) |
| Loaded 40HC reefer + tandem chassis | ~38,000 kg / 83,800 lb | ~11,000 lb | 40,000 lb (PT300DW or 760PA) |
| Yard mixing 20ft and 40HC reefer work | Mixed | Up to 11,000 lb | 40,000 lb (PT300DW or 760PA) |
The honest reading: a yard that only weighs 20ft boxes can run 20,000-lb pads. A yard that weighs any 40HC reefer or tridem chassis should pay the extra for the 40,000-lb option. Being short-rated once means a wrong reading on a SOLAS declaration, which is the kind of paperwork problem that costs a customer the booking.
Are Onsite Pads or a CAT Scale Trip Cheaper?
Onsite pads and a CAT scale trip cross over at about 25 weighs a month: above that volume the owned pads are cheaper per weigh, below it the CAT trip wins. Brantford operators have a CAT scale ten minutes up Highway 403 at the Flying J in Cambridge, another at the Pilot in Woodstock, and a third at the TA in Vaughan. CAT charges a flat fee for the first weigh and a smaller fee for a reweigh, with the daily total capped per truck per 24-hour period. The CAT ticket carries an unconditional guarantee: weigh legal on CAT, then get an overweight citation, CAT pays the fine. Genuinely valuable for over-the-road haulers.
What it does not solve is the round trip. A Brantford yard to the Cambridge CAT scale is 40 to 60 minutes round trip. Multiply by five loaded chassis a day and the yard burns five hours of driver time on weighing alone. The portable pad set pays for itself in five months of that pattern.
| Decision Factor | Portable Pad Set Onsite | CAT Scale Trip |
|---|---|---|
| Capital cost | One-time purchase of the pad set | No equipment to buy |
| Per-weigh cost | Effectively zero once owned | Per-ticket fee each visit |
| Time per weigh | 3 to 5 minutes in yard | 40 to 90 minutes round trip |
| Annual recertification | Yearly Measurement Canada visit | Built into CAT operation |
| Legal-for-trade | Yes (Measurement Canada) | Yes (CAT certified) |
| SOLAS VGM accepted | Yes | Yes |
| MTO axle compliance check | Yes | Yes |
| Driver-fine guarantee | No | Yes (CAT pays the fine) |
| Breakeven volume | ~25 weighs/month | Any volume below that |
For a yard weighing 25+ boxes a month, onsite pads are the cheaper path within five months. Below that, CAT stays cheaper and the fine guarantee is worth keeping. Many Ontario yards run both: pads for high-volume contract work, CAT scale for the occasional odd load where the driver wants the guarantee. The same logic applies whether checking road compliance for MTO or producing the certified weight for a sea declaration. We lay out how road-compliance weighing and sea-declaration weighing fit together in our overview of weighing a loaded box in Ontario, and the walkthrough of the nearest CAT-scale options off the 403 covers the trip side in detail.
Paul on the day a yard buys its first set of pads
Paul LeBlanc, owner: “First yard I watched install a portable pad set was a contract shipper out of Cambridge in 2017. Four pads on gravel by noon, Measurement Canada provider on site by two, six boxes weighed that afternoon without leaving the property. The owner told me he wished he had done it three years earlier. I have watched the same conversation happen four times since. The yards that wait the longest are the ones who think the install will be complicated. It is the easiest piece of weighing equipment a yard ever buys.”
Paul has 19 years in containers and 40 in Asian trade. He has watched the Ontario container market shift from in-ground weighbridges (everyone made a pilgrimage to a shared bridge) to onboard air-bag scales (every truck carried its own approximation) to portable pads (every yard has a certified instrument in the dirt). The pads are the equilibrium point.
How Does an Ontario Yard Choose a Scale Kit?
An Ontario yard chooses a scale kit by matching pad capacity to the heaviest box it packs and the site it has to work with. The three tiers below sort by per-wheel rating and site prep, from a 20ft-only setup on gravel to a contract scale-house on poured concrete.
| Line Item | Entry Level | Recommended | Premium |
|---|---|---|---|
| Four wheel-weight pads | SellEton Load Ranger | Intercomp PT300DW | Cardinal 760PA aluminum |
| Per-wheel capacity | 20,000 lb | 40,000 lb | 60,000 lb |
| Site prep | Granular A gravel | Granular A gravel | Poured concrete pad |
| Initial verification | Single service-provider visit | Single service-provider visit | Single service-provider visit |
| Annual recertification | Yearly visit | Yearly visit | Yearly visit |
| Relative Year 1 outlay | Lowest | Mid-range | Highest |
| Best fit | 20ft-only yards | Mixed 20/40/HC reefer | Contract scale-house |
The recommended kit handles every box a Van Blanc customer would typically pack on our chassis. The premium kit is what a yard buys when they intend to operate a scale-house service, charging per weigh.
What Mistakes Do Ontario Yards Make on a First Install?
The mistakes Ontario yards make on a first install cluster in five spots: under-rating the pads, setting them on asphalt, skipping the service-provider visit, training only one driver, and leaving the junction box uncovered through winter.
Buying 20,000-lb pads to save money, then weighing a 40HC reefer. The chassis tandem puts 11,000 lb on each rear wheel on a max-load reefer. The pad reads it, but it has no headroom for the day someone packs 5% over plan. Buy the 40,000-lb pad.
Installing on asphalt instead of gravel or concrete. Hot July asphalt deforms under the 11,000-lb wheel load. The corner pad sinks, the corner cell reads light, and the individual axle readings go wrong. Gravel or concrete, nothing else.
Skipping the Authorized Service Provider visit. The pads come with an NTEP sticker out of the box. NTEP is not enough. Measurement Canada requires the Notice of Verification before the readings support a trade transaction. Many yards run for a year unaware their VGM declarations are technically unsigned. The first port audit catches it.
Not training the second driver. The owner learns the indicator perfectly. The second driver who comes in Tuesday does not. He weighs without zeroing, gets a 500-lb-high reading, the paperwork goes out wrong, and the carrier downgrades the booking class on arrival. Train every driver in the first month.
Letting the pads sit out through winter without cover. The load cells are IP67. The cable connections at the junction box are weather-resistant, not weatherproof. Eight months of road salt and freeze-thaw and the corrosion at the junction shows up as a drift the recertification cannot compensate. A plastic dust cap and a marine-grade tarp solve it. Yards that skip the tarp pay for a junction-box rebuild in year three.
Yards that prep the site properly still have the same pad set running clean five years later. The yards that skip prep usually replace the kit by year four. The pad set is the cheaper half of the equation; the boxes a yard packs and ships day in and day out are where we come in, and most of our scale customers first found us shopping the containers we keep ready to load at the Brantford yard.
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Frequently asked questions
Are portable wheel-weight pads legal for trade in Ontario?
Yes, when certified under the Weights and Measures Act and verified by a Measurement Canada Accredited Authorized Service Provider. The pads themselves must carry a Notice of Approval. The installation must be inspected. The sticker on the indicator is the proof. Without that sticker, the readings cannot be used for trade transactions including SOLAS VGM declarations.
How much does a complete portable container scale bench installation cost in Ontario?
The total depends on pad capacity, site prep, and certification rather than any single sticker price. Entry-level 20,000-lb kits are the most affordable first-year outlay once you add gravel site prep and the initial Measurement Canada verification. The common Ontario yard configuration with 40,000-lb pads (Intercomp PT300DW or Cardinal 760PS) costs more up front but carries every box you are likely to weigh. Annual recertification is a modest recurring cost thereafter, driven by travel distance and the test weights required.
Do I need a concrete pad to install portable wheel-weight scales?
No, but the surface has to be level and hard. Six to twelve inches of compacted granular A gravel works for most Ontario yards if it is graded within a quarter-inch over the wheelbase and drains properly. Concrete is more durable long-term but adds to the install and is not required for legal-for-trade certification.
What is the difference between a Cardinal 760PS and an Intercomp PT300DW?
The Cardinal 760PS is a 60,000-lb-per-pad scale; the Intercomp PT300DW is 40,000-lb-per-wheel with wireless head and faster setup. Both are Measurement Canada legal-for-trade. The Cardinal has more headroom. The Intercomp is faster to deploy. For most Ontario container yards, the PT300DW is the more practical choice.
Can I use a Right-Weigh onboard scale for SOLAS VGM declarations?
No. Right-Weigh reads suspension air-bag pressure, not certified weight. It is not Measurement Canada legal-for-trade. Excellent for pre-trip checks. The certified number on a SOLAS declaration has to come from a Measurement Canada approved scale: a CAT-scale ticket or a certified onsite pad set.
How long does the install actually take?
Pad layout and electrical connection runs about two hours on a prepared gravel site. The Measurement Canada inspection adds another two to three hours. Plan for a half-day total. Site preparation (granular A, leveling, drainage) happens before pad arrival, another half-day of landscape contractor work.
What does annual recertification involve?
A Measurement Canada Accredited Authorized Service Provider arrives with certified test weights, runs a calibration sweep across the pad range, adjusts the indicator if the drift exceeds tolerance, and applies a new yearly sticker. Plan for a two to four hour visit, with the cost driven by travel distance and the test weights required, in the Brantford and Hamilton area. Combining the visit with forklift annual inspection shares the trip charge.
Can the pads stay outside year-round in Ontario weather?
Yes, if you protect the junction box and indicator. The load cells themselves are IP67 rated and survive eight months of road salt and freeze-thaw without issue. The cable connections at the junction box need dust caps when disconnected and the wireless indicator needs a marine-grade cover when not in use. Yards that skip the covers pay for a junction-box rebuild around year three.
How do portable pads compare to a CAT scale at Highway 403?
A CAT scale charges a per-weigh fee and carries an unconditional guarantee, but it adds a 40 to 90 minute round trip from a Brantford yard. Portable pads cost effectively nothing per weigh once owned and take three to five minutes in the yard, but they require a capital outlay up front. Breakeven is roughly 25 weighs a month. Below that, CAT stays cheaper. Above that, the pads win.
Where do I buy portable container scale benches in Ontario?
Cardinal Scale distributes through Canadian dealers including Northern Scale and Brock Scale. Intercomp sells direct from Medina MN and through Ontario distributors including Process Weighing Systems. SellEton ships direct. A Hamilton, Toronto, or Mississauga dealer can deliver to a Brantford yard in two to three weeks and book the initial verification on the same trip.
Sources
- Transport Canada. (2024). TP 15330: Canadian procedure for obtaining the verified gross mass of packed containers as required by SOLAS VI/2. tc.canada.ca
- Measurement Canada. (2024). Weights and Measures Act: Approved devices and inspection requirements. ised-isde.canada.ca
- Intercomp Company. (2025). PT300DW portable truck scale specifications and Measurement Canada approval. intercompcompany.com
- Cardinal Scale Manufacturing. (2025). 760PA aluminum wheel-weight scale specifications. cardinalscale.com
- International Organization for Standardization. (2013). ISO 1496-1:2013: Series 1 freight containers, specification and testing. iso.org
Reach Van Blanc in Brantford
We have been supplying shipping containers across Ontario since 1995. Our warehouse is at 90 Morton Avenue E in Brantford, and we deliver right across the province on a cash-on-delivery basis. No surprise fees, no chase-the-paperwork.
Van Blanc Ent. Inc. 90 Morton Ave E Unit 1B, Brantford, ON N3R 7J7 +1 888-509-6658
If you are weighing your own loads in an Ontario yard and want to talk through the right scale option before you buy, drive down to our Brantford yard and we will walk you through what other regional shippers have installed. Worth the drive for unbeatable quality, family customer service with 30 years of experience.