MRM Precision Instruments Inc.
Advanced Digital Force Gauges
Series 4


Series 4 digital force gauges are designed for tension and compression force testing in numerous applications across virtually every industry, with capacities from 0.12 lb to 500 lb (0.5 N to 2500 N). The gauges feature a sampling rate of 3,000 Hz, producing accurate results under a wide range of test conditions. Accuracy is ±0.2% of full scale, and resolution is 1/2000. A large, backlit graphics LCD displays large, legible characters, while the simple menu navigation allows for quick access to the gauges’ many features and configurable parameters. Data can be transferred to a PC or other data collector via USB, RS-232, Mitutoyo (Digimatic), or analog outputs.

On-board data memory for up to 50 readings is included, as are statistical calculations and output to a PC. Integrated set points with indicators are ideal for pass-fail testing and for triggering external devices such as an alarm, relay, or test stand. The gauges are overload protected to 150% of capacity, and an analog load bar is shown on the display for graphical representation of applied force.

An ergonomic, reversible aluminum design allows for hand held use or test stand mounting for more sophisticated testing requirements. Series 4 digital force gauges are directly compatible with Mark-10 test stands, grips, and software. Series 5 force gauges are directly compatible with Mark-10 test stands, grips, and software.

The gauges include MESUR™ Lite data acquisition software. MESUR™ Lite tabulates continuous or single point data. One-click export to Excel allows for further data manipulation.

Use MESURgauge Software to tabulate, graph, and analyze test data  


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  • High-speed 3,000 Hz sampling rate
  • USB, RS-232, Mitutoyo, and analog outputs
  • Large backlit graphic display
  • 50-point data memory with statistics (min, max, mean, standard deviation) and outputs
  • Live load bar graph with set point markers
  • Programmable set points, with alarms and outputs
  • Peak readings and set points always displayed
  • 5 selectable units of measurement
  • Configurable audio alarms and key tones
  • Password protection, configurable for individual keys and calibration



Accuracy: ±0.2% of full scale
Sampling rate: 3,000 Hz
Power: AC or rechargeable battery. Multi-step low battery indicator is displayed, gauge shuts off automatically when power is too low.
Battery Life: Backlight on: up to 7 hours of continuous use
Backlight off: up to 24 hours of continuous use
Measurement units: lbF, ozF, gF, kgF, N, kN, mN (depending on model)
Outputs: USB / RS-232: Configurable up to 115,200 baud.
Mitutoyo (Digimatic): Serial BCD suitable for all Mitutoyo SPC-compatible devices.
Analog: ±1 VDC, ±0.25% of full scale at capacity,
General purpose: Three open drain outputs, one input.
Set points: Three open drain lines.
Safe overload: 200% of full scale (display shows “OVER” at 110% and above)
Weight: M4-012 - M4-100: 1.0 lb [0.45 kg]
M4-200 - M4-500: 1.2 lb [0.54 kg]
Included items: Carrying case, chisel, cone, V-groove, hook, flat, extension rod, universal voltage AC adapter, battery, quick-start guide, USB cable, resource CD (USB driver, MESUR™Lite software, MESUR™gauge DEMO software, and user's guide), NIST-traceable certificate of calibration with data
Warranty: 3 years (see individual statement for further details)

A wide range of test stands and gripping fixtures

MESUR™gauge software
tabulates and plots load vs. time or load vs. travel. Also calculates statistics, exports to Excel, and more.
Output cables
Send test data to a PC, statistical printer, or other data collector for further analysis.
Eye end adapters
allow for quick grip installation and removal, and prevent grip rotation. Mount to common test frames, load cells, and force gauges.
Mounting plate
For mounting Mark-10 gauges to a fixture or testing system. Includes mounting hardware.
: Gauge mounting plates are included with Mark-10 test stands.

Capacity x Resolution
Model lbF ozF kgF gF N kN mN
M4-012 0.12 x 0.00005 2 x 0.001 - 50 x 0.02 0.5 x 0.0002 - 500 x 0.2
M4-025 0.25 x 0.0001 4 x 0.002 - 100 x 0.05 1 x 0.0005 - 1000 x 0.5
M4-05 0.5 x 0.0002 8 x 0.005 - 250 x 0.1 2.5 x 0.001 - 2500 x 1
M4-2 2 x 0.001 32 x 0.02 1 x 0.0005 1000 x 0.5 10 x 0.005 - -
M4-5 5 x 0.002 80 x 0.05 2.5 x 0.001 2500 x 1 25 x 0.01 - -
10 x 0.005
160 x 0.1 5 x 0.002 5000 x 2 50 x 0.02 - -
M4-20 20 x 0.01 320 x 0.2 10 x 0.005 10000 x 5 100 x 0.05 - -
M4-50 50 x 0.02 800 x 0.5 25 x 0.01 25000 x 10 250 x 0.1 - -
M4-100 100 x0.05 1600 x 1 50 x 0.02 50000 x 20 500 x 0.2 - -
M4-200 200 x 0.1 3200 x 2 100 x 0.05 - 1000 x 0.5 1x 0.0005 -
M4-500 500 x 0.2 8000 x 5 250 x 0.1 - 2500 x 1 2.5 x 0.001 -
All models include 110V AC adapters. Add suffix ‘E’ for euro plug (220V), ‘U’ for UK plug (220V), or 'A' for Australian plug (220V).
Example: M4-50E, M4-200U, M4-500A
Additional Items to Consider
15-1004 MESUR™gauge software
09-1163 Cable, Series 5 to RS-232
09-1165 Spare USB cable
08-1026 Spare rechargeable battery
AC1030 Spare AC adapter, 110V
AC1031 Spare AC adapter, 220V EUR
AC1032 Spare AC adapter, 220V UK
AC1035 Spare AC adapter, 220V AUS
AC1052 Mounting plate kit

Gauge Model
Accessory M4-012 - M4-20 M4-50 - M4-100 M4-200 - M4-500
Extension Rods G1024 G1024 G1031
Cone G1026 G1026 G1033
Chisel G1025 G1025 G1032
V-Groove G1027 G1027 G1034
Flat G1029 G1029 G1036
Hook G1028 G1038 G1035
Coupling - G1039 G1037


M4-012 - M4-100 #10-32 UNF
M4-200 - M4-500 5/16-18 UNC

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