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“For Good Measure”®

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Product List


Test and Measurement Instruments C.C.

          CK 1985/007464/23

“Tomorrow’s Instruments Today”  —  “For Good Measure” ®

TMI, Established—1982

English, Afrikaans, Portuguese Speaking.                         Master/Visa Credit Cards

Digital Scales

Digital Scales

Part No:  GM-5000

5000g x 1 g, 176 oz x 0.05oz, 4 Digit LCD , with RS232

Lutron GM-5000 Digital Scale

Part No:  GM-600P

500g x 0.1 g, 17,6 oz x 0.005oz, 4 Digit LCD , Auto self Calibrate, with RS232

Lutron GM-600P Digital Scale



Lutron GM-600P Digital ScaleLutron GM-5000 Digital Scale

Part No:  GM-300P

300g x 0.01 g,   g/oz, 4 Digit LCD , Auto self Calibrate, with RS232 (Hi Resolution)

Lutron GM-300P Digital Scale


Lutron GM-300P Digital ScaleLutron GM-5000 Digital ScaleLutron GM-600P Digital Scale
Lutron GM-300P Digital Scale

Notes on Digital Scales, Balances and Corner Weight Scales.

Scales and balances are used to measure static or dynamic loads for a wide range of industrial applications. They are used to weigh small packages, the contents of hoppers, and extremely heavy loads that are hauled by trucks or trains. Performance specifications for scales and balances include measurement type, rated load, and accuracy. There are three basic measurement types: compression, shear, and tension. Compression squeezes contents along the same axis. Shear is compression along the offset axes. Tension weigh modules are used to convert a suspended tank or hopper into a scale. To provide reliable measurements, mounting hardware is used to ensure that only the vertical load is measured. Rated load is the maximum load that scales and balances can handle without sustaining permanent damage. Accuracy is the limit tolerance or average deviation between the actual output and the theoretical output.

Scales and balances provide analog outputs and differ in terms of display type and user interface. Many devices can output a voltage signal or current signal in proportion to the strain on the sensor. Common voltage ranges include 0 – 5 VDC and 1 – 5 VDC. The most common analog current loop is 4 – 20 mA. Devices with a switch or relay that operates at set point are also available. Scales and balances display values with analog meters, digital readouts, or video display terminals. Analog meters include a needle or light emitting diode (LED). Digital readouts are numerical or application-specific. Video display terminals (VDT) include cathode ray tubes (CRT) and flat panel displays (FPD). Some scales and balances include an analog front panel with potentiometers, dials, and switches. Others have a digital front panel. Larger, more complex systems can often be controlled remotely with a computer interface and include application software.  

Scales and balances differ in terms of applications and features. Benchtop devices are relatively small and measure a limited range of loads. Conveyor scales weigh items as the pass along an assembly line. Truck, rail, and axle scales are placed under a vehicle’s tire. Floor scales align the measuring platform with the main floor and are suitable for shipping heavy freight and animals. Dynamometers measure the amount of power applied. Counting systems, crane scales, hopper or tank scales, weigh checks, and general-purpose industrial scales are also available. In terms of features, some scales and balances have a built-in audible or visual alarm. Others are waterproof, washdown-capable, or ruggedized for harsh environment.

Corner Weight Scales are typically used in Motor Racing applications, where an individual scale or load cell is placed under each wheel, and the spring’s tension pushing down on each wheel is adjusted to the requirement of the race engineer or driver, depending on track conditions, driver style, and race car attitude. Imagine a 4 legged chair with legs of uneven lengths. The chair would rock giving two legs much more pressure or weight to carry than the two other unloaded legs. The same applies to cars, where two wheels may carry more weight than the other two, making the car less suitable for some race circuits. A fine balance can be established by trial and the ultimate experience of the race car driver. Fine drivers can even compensate for the counter action of the centrifugal forces derived from an accelerating engine of great power coming out of a corner, pushing one side of the car down to the track with greater force, than the other side. Remember that the engine turns in one direction, say clock wise, exerting a force onto the chassis in an anticlockwise direction, thereby loading that relevant side of the car more than the other. Another good reason to weight each wheel is to be able to balance the weights of the various accessories and components, placing them ideally to create the balance necessary, also taking the weight of the driver into account. This applies to all forms of motor sport. Formula 1, NASCAR, Indy Cars, German Touring Cars and all top categories employ these tactics to give them the edge to win races, so why shouldn't you do so. Experiment to win.

Some Corner Weight Scales have connecting cables to the control and monitoring unit, while others do not, and employ the wireless technology such as those supplied by Intercomp. These cordless scales make it easier, faster and less complicated in the pits in the midst of the usual race day confusion, thus giving one some well earned breathing time.

This newer generation of Intercomp digital scales continue the high standards of accuracy (certified to 0.1%), strength (using billet aluminium scale pads), and durability (with 2 year warranty) at much more affordable prices. These systems display up to 6000 pounds (2800kg) in pounds or kilograms on a backlit display, using heavy-duty colour-coded cables.

Test and Measurement Instruments C.C. T+M Instruments

Part No:  GM-1500P

Digital Balance. 1500g X 0.05g, RS232 Computer Interface, gram or ounce display unit, Self Calibrating and memorizing into memory.

Lutron Digital Scale

Part No:  GM-3KG 

3 kg Digital Scale.  3000 g x1 g, LCD display with Backlight. Self Calibrating with Memorising, with Counting Function. Compact size.

Lutron GM-3KG Digital Scale



Lutron GM-3KG Digital ScaleLutron Digital Scale
Lutron Digital ScaleLutron GM-3KG Digital Scale

Digital Corner Weight Scales

Part No:  SW500

Corner Weight Scales. Ideal for Racing application. 2,800Kg System Capacity, USB & RS232 Output.  Accuracy - 0,1%. Stores 100 Setups. Calculations.


SW500 Intercomp Corner Weight ScalesSW500 Intercomp Corner Weight ScalesSW500 Intercomp Corner Weight Scales

Part No:  SW787RFX

Corner Weight PC Wireless Scales. Ideal for Racing application. 2,800Kg System Capacity, RS232 Output to printer  Accuracy - 0,1%. Dedicated Software.


SW787RFX Wireless Corner Weight ScalesSW787RFX Wireless Corner Weight ScalesSW787RFX Wireless Corner Weight Scales

Part No:  GM-500

500g x 0.1 g,  or in ounces, 4 Digit LCD , Auto self Calibrate, with RS232. Heavy Duty ABS Plastic. Large LCD Display.

GW-500 Lutron Scale


GW-500 Lutron Scale
GW-500 Lutron Scale

Copyright  © 2009—2022 Test and Measurement  Instruments C.C.   |  All rights reserved

Digital Scales

See also: Racing Equipment

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Mining Scale Systems

Part No:  MS 450                  

Mining Scale Systems. Measure up to 800 Tons with Above Ground or In-Ground Systems. Environmentally sealed Load Cells for all weather protection. Wireless.


Intercomp Mining Scale Systems
Intercomp Mining Scale SystemsIntercomp Mining Scale Systems
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Brand Names



Air Quality Meters

Alcohol Breath Tester

Alignment Equipment

AM & FM Signal Generators


Appliance Testers

Audio Generators

Audio Impedance Meter


Automotive testers



Batteries for Equipment

Battery Analyser /

Battery Desulphator Charger

Bench DMM’s


Bread Boards

Breath  Alcohol Tester

Cable Fault Locators

Cable Height Meter

Cable Testers


Capacitance meters

Carbon Dioxide meters

Carbon Monoxide meters

Car Testers

Caster / Camber Gauges

Chlorine Meter

Clamp meters

Clearance Sale:

Colour Analysers

Combination Combo Meters

Concrete Testing

Conductivity  / TDS meters

Contact Tachometers

Continuity Tester

Controller / Monitors

Corner Weight Scales

Coronavirus COVID-19

Current Meters, Bench Type

Data Acquisition Systems

Data Loggers

Decade Boxes

Dew Point Meters

Digital Vernier Calipers

Digital Scales

Digital Multimeters , DMMs

Dissolved Oxygen Meters

Distance Meters

Drain Pipe Camera

Drug Testing

Dust Monitoring

Earth resistance meter

Earth Leakage Tester, ELCB

Educational Systems

Electrical Connectors

Electromagnetic Field Testers

Electrostatic Field Tester

EMF tester

Explosives Testing

Eye Tracker

Field Strength Meters

Force gauge

Frequency Counter

Function Generators

GSM Controller

Gas leak detector

Green Hybrid Power

Grid Dip Meter

Hardness tester

Helicopter IR Gimbals

HV(High Voltage) Testing

Humidity meter


Inductance Decade Box

Infrared Thermometers

Infrared Thermography


Insulation tester

Laser Levelling

LCR meter

Leakage Clamp Meters

Logic Analyser

Logic Probes/Pulsers

Lux meter, (Light meter)


Metal Detector


Micro-Ohm Meters

Microwave Leakage

Milliohm meter


Moisture meter


Night Vision Equipment

Optical Gas Imaging OGI Thermal Cameras

ORP meter


Oxygen Meters

Pattern generators

Panel meter

PC-Based Instruments

Pen type tester

pH Meters and Probes

Pipe Inspection Camera

Photo Tachometer

Power analyzer

Power clamp meter

Power Supplies

Pressure/Vacuum meter

3 Phase Rotation Tester

Pressure Transducer

Probes, Oscilloscope

Protection Relay Testing

Proximity sensor

Racing Equipment

RCCB tester

RCD, RCCB Testers

Radiation Testers


Renewable Energy

RF Generators

Resistance Decade Box

Roughness tester


Salt meter

Satellite Testing Equipment


Scales, Digital

Shore Hardness Tester


Soil Moisture Meters

Soil pH meter

Solar Power Meter


Sound level meter

Spectrum Analyser


Student Bench Meters

Stun Guns

SWR / RF Power Meters


TDS / Conductivity Meters

Test Leads

Thermal Cameras– Long Distance –20Kms

Thermal Imagers



Thermography Courses

Thickness Testers

Tone Generator/ Tracer

Tools - Hydraulic Crimp

Torque meter

Torque wrench

Transformer Testing

Transient Suppressors


TV & Satellite Meters

Turbidity Meter

Ultrasonic Flaw Detector

Ultrasonic Thickness

UV Corona & IR Cameras, Combined

UV light meter

Vacuum meter

Variable Transformers

Verniers, Micrometers

Vibration meter

Video Scope

Watt meter

Water Tester

Water Testing Meters

Weather Station

Vacuum/Pressure meter

Voltmeters, Bench Type

Voltage Detectors

Voltage Regulators

5 Way® Binding Posts

Voltage Stabilisers

XRF Analysers

All brands, trade names, trade marks, and logos are the property of their respective owners.

T + M®                      




Time Group




Superior Electric


S.E.W. Standard Electric Works

Ph:   +27 (011) 683 4365 / 6 / 7

E-mail: sales@instrumentsgroup.co.za






Physical   Address:              

3 Angelica Ave,

Glenvista, Johannesburg, 2091



Postal Address:

As Above.

011 683 4365
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Also: Thermal Imagers

FLIR TG267 Thermal Imagng Spot Non Contact Thermometer