Dimensioning and Cubing Systems

A dimensioning (or “cubing”) system measures the length, width, height, and often the weight of an item, carton, or pallet, and writes those numbers into a system of record. The measurement itself is simple. The reason DCs buy these systems is that the dimensional data drives money and layout decisions downstream: how a carrier bills you, how the WMS builds cartons and loads, and where product should sit in the pick face. This page covers what the data is used for, the main system types (static vs in-motion, parcel vs pallet, contour and legal-for-trade checking), and the vendor landscape, using a concrete Cubiscan quote pair as the worked example.

Why DCs capture dimensional data

• DIM (dimensional) weight and carrier billing. Parcel carriers bill on the greater of actual weight or dimensional weight (volume divided by a DIM divisor). If a DC does not know a carton’s real cube, it cannot predict or audit its parcel invoice, cannot rate-shop accurately, and gets surprised by adjustment charges when the carrier re-measures. Accurate dimensions captured at the source are the defense against carrier re-weigh/re-dim adjustments. See Parcel and Last Mile Logistics.
• Master-data capture. New SKUs arrive without reliable dimensions. A dimensioning station captures LxWxH and weight once, cleanly, at receiving or item setup, and pushes it to the item master. Every downstream calculation (cartonization, slotting cube, truck fill, storage-media assignment) is only as good as that master data.
• Cartonization. The WMS uses item dimensions to pick the right box size and to pre-plan how items nest in it. Bad dimensions produce oversized boxes, wasted dunnage, and inflated DIM-weight charges.
• Slotting cube data. Slotting logic needs the cubic volume and footprint of each SKU to assign it to the right location size and to balance pick-face density. Stale or missing cube data is a common root cause of slotting drift. See Slotting Degradation and Re-Slot Timing.
• Rate shopping and load planning. Accurate pallet and carton cube feeds trailer-fill and mode-selection decisions, and lets a rate engine compare carriers on a true dimensional basis.

For where dimensioning fits in a modern fulfillment building, see E-commerce DC Design; for the throughput and accuracy metrics a dimensioning station is measured against, see Warehouse KPIs.

System types

Static vs in-motion. A static dimensioner measures an item placed on a platform or under a fixed sensor head while it is stationary; the operator (or a robot) presents the item, the system captures, and the operator removes it. An in-motion dimensioner measures items as they travel on a conveyor without stopping, and is paired with an in-motion scale and often a barcode scanner to build a “weigh-in-motion / dim / scan” (sometimes “dimensioning-weighing-scanning”, DWS) station. Static suits master-data capture and lower-volume or irregular items; in-motion suits high-throughput sortation and shipping lanes where stopping product is not acceptable.

Parcel/carton vs pallet. Parcel and carton dimensioners work on a small measurement envelope (a box on a table or a conveyor) and are optimized for high accuracy on regular cuboids. Pallet dimensioners measure a much larger envelope, a full loaded pallet, and have to cope with irregular loads, overhang, shrink wrap, and lean. The measurement principle is usually a set of laser/light or camera sensors reading the load from several angles. The Cubiscan station in the worked example below quotes a standard capacity of 8 ft L x 8 ft W x 9 ft H, which is a pallet-scale envelope (Source: cubiscan-dimensioning-station-quotes-2024).

Contour checking and legal-for-trade. Two capabilities often bolt onto a pallet dimensioner:

• Contour / cube checking looks beyond a bounding box at the shape of the load: pallet tilt or lean, product overhang past the pallet footprint, and where the payload sits relative to the pallet. This catches loads that will not fit a rack opening or that are unsafe to transport. In the worked example, contour checking is an add-on package: contouring software plus a third laser contouring sensor (Source: cubiscan-dimensioning-station-quotes-2024).
• Legal-for-trade (LFT) certification means the measured dimensions and weight are certified to a standard and can be used as the basis for billing between parties. The Cubiscan units in the example are quoted with NTEP / MC / OIML R129 LFT certification (Source: cubiscan-dimensioning-station-quotes-2024). That certification is what makes the captured dimensions defensible in a carrier or customer billing dispute.

[!gap] Typical DIM divisors and in-motion accuracy tolerances (for example the common 139 in^3/lb domestic parcel divisor, or millimeter-class accuracy claims for LFT stations) are general-knowledge figures, not present in the source quotes. Confirm current divisors against carrier contracts and accuracy against the specific model’s spec sheet before quoting them to a client.

Cubiscan as a vendor

Cubiscan (Farmington, UT) is one of the established vendors for dimensioning and cubing hardware across the parcel-to-pallet range, and its equipment is commonly specified for master-data capture and pallet contour checking in DC projects. The worked example here is a pair of 2024 Cubiscan quotes for the same buyer, quoting the same pallet dimensioning / contour-checking job in two mounting variants.

[!gap] Cubiscan’s overall market position relative to peers (for example Mettler-Toledo/CargoScan, SICK, Vitronic, or Metrologic-style in-motion systems) is general context and is not established by the source quotes. Treat the “leading vendor” framing as directional, not a ranked claim.

The two mounting variants (worked example)

Both variants share the same core: an 8x8x9 ft measurement envelope, a camera and image-capture, basic user/data interface, calibration, training, and NTEP/MC/OIML R129 LFT certification, plus the same optional contouring package (contouring software + third laser sensor) and QBIT software license (Source: cubiscan-dimensioning-station-quotes-2024).

(All figures Source: cubiscan-dimensioning-station-quotes-2024.)

Tradeoffs. The ceiling-mount variant keeps the floor clear, which matters when the dimensioner sits in a busy travel or staging aisle, but it costs more up front (higher base price plus the overhead structure) and its install is more involved: you are working at height, so the quote carries a scissor-lift rental and an extra travel/crate cost. The floor-mount variant is cheaper and simpler to install (no lift, small crating fee), and it is designed to straddle a conveyor at a fixed 27 in belt height, which suits an in-line checking position; the cost is floor space and structure in the work zone. For a station that lives over an existing conveyor line, floor-mount is the natural fit; for a manual staging area where floor clearance and forklift traffic matter, the ceiling-mount earns its premium.

Stated Cubiscan specs (from the quotes)

• Measurement capacity: 8 ft L x 8 ft W x 9 ft H standard (floor variant measures over a 27 in high conveyor).
• Certification: NTEP / MC / OIML R129 legal-for-trade.
• Imaging: one camera with image-capturing software included on both variants.
• Software: QBIT license (may include DB, Xfer, Web Services, IM, Cloud depending on end-user data/storage needs) - this is the WMS/data-integration layer.
• Contour package: contouring software (pallet tilt/lean, overhang, load position) plus a third laser contouring sensor (mounting, wiring, software integration, calibration, labor included).
• Optional deck scale: NTEP floor scale, 5,000 x 1 lb, 48” x 48” platform, four 4K load cells (quoted but not selected).
• Optional status light stack (red/yellow/green) and, on the ceiling variant, a controller stand kit.
• Lead time 10-12 weeks from PO.

(All Source: cubiscan-dimensioning-station-quotes-2024.)

[!gap] Cycle time (measurements per hour) and stated dimensional accuracy/resolution are not given in these two quotes. Pull them from the model-specific Cubiscan spec sheet before committing throughput or accuracy numbers in a design.

How to read a dimensioning quote

The worked example shows the line-item pattern to expect on a pallet dimensioning station quote (Source: cubiscan-dimensioning-station-quotes-2024):

1. Base unit with the measurement envelope, interface, camera, calibration, install, training, and LFT certification bundled in.
2. Software license (QBIT) as a separate line for the data/integration layer.
3. Contour package as an add-on (software + extra sensor + bracket) when the job needs lean/overhang checking, not just a bounding box.
4. Optional scale if the station also weighs (deck scale line, often quoted at $0 when not selected).
5. Provisioning and services: travel (billed at actual, estimated at 2-3 trips), shipping (at actual), crating, and system commissioning.
6. Install-method line that varies by mount: the ceiling variant carries a scissor-lift rental and a heavier crate; the floor variant substitutes a flat crating fee.
7. A maintenance agreement (Cubiscan Certified Agreement - annual calibration/training/support visit) offered as a line, quoted at $0 here but the mechanism to keep the LFT calibration current.

The maintenance/CCA line matters more than its $0 placeholder suggests: an LFT-certified dimensioner has to stay calibrated to keep its certification meaningful, so the annual calibration visit is effectively a recurring cost of ownership even when it is not selected in the initial quote.

Practitioner notes

• Buy the dimensioner where the data problem is. For master-data capture, a static station at item setup or receiving is enough and cheaper. For shipping/billing defense, you want an in-motion LFT station in the outbound lane. For pallet fit and safety, you need the contour package, not just a bounding-box dimensioner.
• The certification is the point. If the dimensions are going to settle a billing dispute, an LFT-certified unit that stays calibrated is worth the maintenance overhead; a non-certified unit’s numbers can be challenged.
• Mount choice is an install and floor-space decision more than a measurement decision: both Cubiscan variants measure the same envelope, so pick based on whether the station straddles a conveyor (floor) or must keep floor traffic clear (ceiling), and budget the scissor-lift/crate delta accordingly.