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M5-2-COF Coefficient of Friction Gauge

M2-COF Coefficient of Friction Tester
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The M5-2-COF coefficient of friction (COF) gauge is an integral part of a COF testing system, typically including a motorized test stand and COF fixture. With a capacity of 2 lbF [10 N], the gauge can be used to measure friction for a wide range of materials, ideal for conformance to ASTM D1894 and other relevant standards. Static and kinetic coefficients are displayed on the backlit LCD, and are calculated from a user-programmable sled weight.

Data can be transferred to a PC or data collectors via USB, RS-232, Mitutoyo (Digimatic), or analog outputs. On-board memory for up to 1,000 readings is included, as are statistical calculations with output to a PC. Integrated set points with indicators and outputs are ideal for pass-fail testing and for triggering external devices such as an alarm, relay, or test stand. Configurable password protects against unauthorized changes to settings.

The M5-2-COF may also be used for a number of common tension and compression testing applications.

The M5-2-COF includes MESURTM Lite data acquisition software. MESURTM Lite tabulates continuous or single point data. Data saved in the gauge's memory can also be downloaded in bulk. One-click export to Excel easily allows for further data manipulation.


  • Calculates static and kinetic coefficients of friction
  • USB, RS-232, Mitutoyo, and analog outputs
  • Programmable set points, with indicators and outputs
  • Configurable sled weight (100 - 1000 g)
  • 1,000-point data memory with statistics and outputs
  • Live load bar graph with set point markers
  • Configurable audio alarms and key tones
  • Password protection, configurable for individual keys and calibration

Force Ranges

M5-2-COF5 COF*
2 lbF
32 ozF
1 kgF
1000 gF
10 N
0.001 COF*
0.005 lbF
0.01 ozF
0.002 kgF
0.2 gF
0.002 N
*Depends on the sled weight. For a 200 g weight, the COF capacity is 5. COF resolution is fixed at 0.001.

Related Products

G1086 COF Tester
Click image for more info
Coefficient Of Friction Fixture
- Maximum sled travel: 10.5 in (265 mm)
ESM303 Motorized Test Stand
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High Performance Motorized Test Stand, 300lb Capacity
- Adjustable Travel Speed, Standard - 0.5 - 13 in/min (13 - 330 mm/min), Optional - 0.02 - 45 in/min (0.5 - 1,100 mm/min)
- USB output of force vs. time or force vs. travel (with optional travel measurement)
Click image for more info
MESURgauge / MESURgauge Plus Load & Travel Analysis Software
- Acquire continuous or single-point data from force and torque measuring instruments and test stands.


Complete Kit

M5-2-COF is supplied in a cushioned carrying case with chisel, cone, V-groove, hook, flat, extension rod, universal voltage AC adapter, battery, quickstart guide, USB cable, resource CD (USB driver, MESURgauge DEMO software, and quick start guide), and NIST-traceable certificate of calibration with data.


Accuracy±0.1% of full scale
Sampling rate7,000 Hz
PowerAC or rechargeable battery. Multi-step low battery indicator is displayed, gauge shuts off automatically when power is too low.
Battery LifeBacklight on: up to 7 hours of continuous use
Backlight off: up to 24 hours of continuous use
OutputsUSB / RS-232: Configurable up to 115,200 baud. Includes Gauge Control Language 2 for full computer control.
Mitutoyo (Digimatic): Serial BCD suitable for all Mitutoyo SPC-compatible devices.
Analog: ±1V DC, ±0.25% of full scale at capacity.
General purpose: Three open drain outputs, one input.
Set points: Three open drain lines.
Configurable SettingsCOF sled weight, digital filters, outputs, automatic output (via USB/RS-232), automatic shutoff, default settings, averaging mode, external trigger, passwords, key tones, audio alarms, backlight, calibration
Safe overload150% of full scale (display shows "OVER" at 110% and above)
Weight1.0 lb [0.45 kg]
Warranty3 years

Buy Now

Item Description Price
M5-2-COF Gauge, Requires Test Stand and COF Fixture to form complete system
M5-2-COF Gauge with G1086 Coefficient of Friction Fixture, Test Stand Sold Separately
MESUR gauge Load & Travel Analysis Software
USB cable, type micro B to A, old PN 09-1165
Spare rechargeable battery for M-10 Gauges, old PN 08-1026
AC adapter, with USA Plug for M10 Gauges
AC adapter with Euro Plug
AC adapter with UK Plug
AC adapter with AUS Plug
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