Best Onboard Scales For Trucks: App, Digital and Analog Compared

#1 · Best Overall

1. Blue Ink Tech BIT Air Scale

• Material: Metal, Plastic
• Weight: 6 oz
• Material Type: Metal, Plastic

Best for: Phone-based truck and trailer weights.

Why it ranks #1: Its app reports total truck weight, cargo load, and individual axle weights, and the kit includes sensors and fittings for truck and trailer lines.

The Blue Ink Tech BIT Air Scale app reports total truck weight, cargo load, and individual axle weights in real time, putting several load views on one phone interface. Its kit includes T-fittings in both 3/8-inch and 1/4-inch sizes for connecting to existing air-suspension lines.

This dedicated truck-and-trailer set uses low-energy Bluetooth to share sensor data with the Blue Ink Tech app, giving drivers phone access to real-time load information. The app’s stated readings cover total truck weight, cargo load, and individual axle weights, useful when checking more than one loading measure. Included T-fittings connect directly to existing air-suspension lines, with both 3/8-inch and 1/4-inch options for the drive axle. The extended trailer scale uses a 3/8-inch fitting on 99% of trailers, according to the supplied details.

Skip it if you want a gauge that reads without a phone app; the Right Weigh 310-54-RK uses an exterior analog dial.

Consider this set if you need app-based truck, cargo, and axle readings for a dedicated truck-and-trailer configuration. Check the included fitting sizes against the air lines at the intended installation points.

Listed on Amazon as: BIT Air Scale 18-Wheeler Set – Bluetooth-Enabled Onboard Load Scale for Dedicated Trucks and Trailers

#2 · Best In-Cab Display

2. Right Weigh 202 Series Digital Scale

• Weight: 9.7 oz

Best for: Dual-sensor in-cab digital setup.

Why it ranks #2: The touchscreen displays axle-group weight in pounds or kilograms, and two sensors support a dual-valve group or dedicated tractor-trailer set.

Two air-pressure sensors let the Right Weigh 202-DDG-02 monitor either one dual-height-control-valve axle group or a dedicated tractor-and-trailer set. Its color touchscreen displays axle-group weight in pounds or kilograms, while Bluetooth adds a connection option for the cab-mounted digital gauge.

The 202 Series touchscreen mounts in the cab of an air-suspension tractor or straight truck, keeping digital weight readings in the driver’s view. Its two sensors support either a dual-height-control-valve axle group or a dedicated tractor-and-trailer set with two total height control valves. The display offers pounds or kilograms, and estimated steer weight is available when the unit is installed on a drive axle group. Setup requires both empty and loaded calibration at a certified ground scale.

Skip it if you need a single-sensor exterior display; the Right Weigh 201-EBT-01B monitors a single-height-control-valve axle group.

This suits air-suspension tractor or straight-truck operators wanting an in-cab digital display for a two-sensor arrangement. Confirm that the axle and height-control-valve configuration matches one of its stated setups.

Listed on Amazon as: Right Weigh 202-DDG-02 Bluetooth-Enabled Interior Digital Load Scale – for Air Suspension Tractors, Straight Trucks, andor Tractor-Trailer Dedecated Sets (2 Air Sensor (2 Height Control Valves))

#3 · Best Lift-Axle Features

3. AKTV8 PressureTech Scale

• Material: Durable Metal
• Material Type: Durable Metal

Best for: Connected fleet load monitoring.

Why it ranks #3: Bluetooth links the sensor to a mobile app for real-time load measurement, and the listed lift-axle algorithm supports up to five lift axles.

Bluetooth links the AKTV8 PressureTech sensor to a smartphone, turning air-suspension pressure into weight readings for the complete truck and trailer. That real-time app view helps operators monitor loads against safe operating limits, while the system’s lift-axle algorithm addresses a configuration that basic pressure monitoring may not cover.

PressureTech converts air-suspension pressure into weight measurements and sends them to a smartphone over Bluetooth, so the driver can review the complete truck-and-trailer load through the app. Real-time visibility supports load-limit monitoring during operations rather than relying only on a later scale stop. AKTV8 also lists a lift-axle-ready algorithm, making lift-axle setups part of the system’s stated scope. The supplied information does not specify sensor installation details or calibration steps, so check those requirements for the intended vehicle configuration.

Skip it if you prefer a standalone exterior gauge; the Right Weigh 310 Series shows weight on an analog dial.

This suits operators who want app-based, real-time load visibility across a truck and trailer, including lift-axle applications. Verify installation and calibration requirements for your particular suspension setup before selecting it.

Listed on Amazon as: AKTV8 PressureTechTM Onboard Scale System – Real-Time Load Measurement for Air Suspended Trucks & Trailers – Bluetooth Enabled Mobile App & Fleet Connectivity

#4 · Best Exterior Digital

4. Right Weigh 201 Exterior Digital Scale

• Material: Stainless Steel
• Weight: 5 lb
• Material Type: Stainless Steel

Best for: Exterior digital single-axle readout.

Why it ranks #4: Its weather-resistant exterior enclosure presents axle-group weight digitally and uses one sensor for a drive or trailer group with one height control valve.

A digital exterior display presents calibrated axle-group weight in pounds, giving a driver a direct numeric reading outside the cab. The Right Weigh 201-EBT-01B uses one air-pressure sensor for a drive or trailer axle group with a single height control valve and includes a programmable five-digit PIN code.

This scale is specified for a drive or trailer suspension with one height control valve, with one sensor monitoring the axle group. Its digital display shows on-the-ground weight in pounds, while the weather-resistant enclosure, mounting bracket, and stainless hardware support exterior installation. A programmable five-digit PIN code adds a user-set access feature. Both empty and loaded calibration at a certified ground scale are required before the displayed group weight can be relied upon for the intended suspension.

Skip it if you monitor a tandem group with one valve and want an analog dial; the Right Weigh 310 Series is configured for that setup.

Select this for a drive or trailer axle group with one height control valve when an exterior digital reading is preferred. Its single-valve scope and empty-and-loaded calibration requirement are essential fit and setup boundaries.

Listed on Amazon as: Right Weigh 201-EBT-01B Exterior Digital Axle Load Scale – for Single Height Control Valve Air Suspensions

#5 · Best Included Air Line

5. Right Weigh 310-54-RK Scale Kit

• Material: Metal
• Weight: 4.8 lb
• Material Type: Metal

Best for: Exterior kit with extended air line.

Why it ranks #5: This tandem-axle analog kit includes 30 feet of air line and fittings, plus a weather-resistant enclosure and a 31⁄2-inch weight gauge.

The Right Weigh 310-54-RK pairs a 31⁄2-inch exterior gauge with 30 feet of air line, giving installers extra line length for connecting the gauge to a tandem suspension air bag. It displays calibrated axle-group weight in pounds and includes the fittings and mounting hardware for the setup.

This kit targets tandem drive or trailer suspensions with one height control valve. Its 30 feet of air line and included connection fittings support routing between the gauge and an air bag, while the bracket and stainless hardware provide the stated mounting components. A 31⁄2-inch gauge shows on-the-ground axle-group weight in pounds, protected by a weather-resistant enclosure and push/pull air valve. Loaded calibration at a certified ground scale is required to establish the reading for the truck or trailer.

Skip it if you need an in-cab display; the Right Weigh 510 Series is an interior analog gauge for tandem axles.

Choose this exterior kit when a tandem axle group with one height control valve needs a longer air-line run to the gauge. Plan for loaded calibration at a certified ground scale before relying on its weight display.

Listed on Amazon as: Right Weigh 310-54-RK Onboard Load Scale Kit for Tandem Axle Air Suspensions

#6

6. Right Weigh 310 Series Exterior Scale

• Material: Polypropylene
• Material Type: Polypropylene

Best for: Weatherproof exterior analog monitoring.

Why it ranks #6: The exterior analog gauge displays tandem axle-group weight in pounds and includes a weather-resistant enclosure, mounting bracket, and stainless hardware.

A 31⁄2-inch exterior gauge displays tandem axle-group weight in pounds, letting drivers check a calibrated reading outside the cab. Its weather-resistant enclosure and push/pull air valve suit an exterior installation, while the included bracket and stainless hardware support mounting at the truck or trailer.

This Right Weigh 310 Series model is made for drive or trailer axle groups with air suspension and one height control valve. The large 31⁄2-inch gauge presents the on-the-ground group weight in pounds, and its weather-resistant enclosure helps protect the exterior-mounted unit. A push/pull air valve, mounting bracket, stainless hardware, and 1/4-inch tube fitting are included. Calibration requires a loaded reading at a certified ground scale, which establishes the reference for subsequent use.

Skip it if you need the reading inside the cab; the Right Weigh 510 Series is an interior-gauge option.

Choose this for a tandem air-suspension drive or trailer axle group when an exterior analog readout is convenient. Its one-height-control-valve configuration and required loaded calibration are important fit considerations.

Listed on Amazon as: 310 Series Exterior Analog Axle Load Scale for Air Suspensions (Tandem Axle, 1 HCV – Standard)

#7

7. Right Weigh 510 Series Interior Scale

• Material: Glass, Metal, Plastic
• Weight: 2 lb
• Material Type: Glass, Metal, Plastic

Best for: In-cab tandem axle readout.

Why it ranks #7: This in-dash analog gauge fits a standard 2-1/16-inch cutout and serves tandem axles with one height control valve, with seven backlight colors.

A selectable seven-color LED backlight makes this 2-inch Right Weigh gauge adaptable to the cab, where it displays calibrated tandem axle-group weight in pounds. Its standard 2-1/16-inch dash cutout fit gives drivers an in-dash viewing option without relying on an exterior gauge.

The 510 Series is specified for a tandem axle air suspension with one height control valve, and its 2-inch dial presents on-the-ground group weight in pounds. The gauge fits a standard 2-1/16-inch dash cutout, which helps integrate it into a compatible cab panel. Drivers can select among seven LED backlight colors to suit their preferred display appearance. A 1/4-inch air-line fitting is included; obtaining a reliable reading requires loaded calibration at a certified ground scale.

Skip it if you want an exterior digital display; the Right Weigh 201-EBT-01B has an exterior digital gauge.

Pick this for a tandem air-suspension truck with one height control valve when an in-dash analog display is preferred. The dash cutout dimension and required loaded calibration define the key installation and setup considerations.

Listed on Amazon as: 510 Series Interior Analog Onboard Load Scale – for Tandem Axle Air Suspensions with One Height Control Valve – 7 Color LED (Black Bezel)

#8

8. MEASUREMAN Air Pressure Gauge Kit

• Material: Brass
• Weight: 2.7 lb
• Material Type: Brass

Best for: Air-bag pressure monitoring kit.

Why it ranks #8: The brass kit measures air pressure in suspension air bags, but its listed details do not specify a weight display or axle-group weight output.

The MEASUREMAN kit measures air pressure in each suspension air bag, giving operators a way to monitor pressure while working toward balanced semi-truck and trailer loading. Its brass construction and stated compatibility with various suspension systems make it a practical pressure-monitoring choice for trucking use.

This kit centers on pressure readings from each air bag, which can help operators monitor suspension pressure and adjust it for load distribution. MEASUREMAN describes installation as straightforward across various semi-truck and trailer suspension systems, making the kit relevant to more than one stated vehicle arrangement. Its brass construction is identified as durable for trucking operations. The supplied details focus on air pressure rather than an explicit weight display in pounds or kilograms, so buyers seeking direct axle-weight figures should account for that distinction.

Skip it if you need axle-group weight displayed in pounds; the Right Weigh 310 Series provides that calibrated readout.

This is a fit for operators monitoring suspension air pressure across a semi-truck or trailer, especially when pressure adjustment is part of the workflow. Choose it with the distinction between pressure readings and direct weight displays in mind.

Listed on Amazon as: MEASUREMAN Air Pressure Gauge Kit for Semi Truck Trailer Suspension, Onboard Load Scales