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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
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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)
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MESURgauge / MESURgauge Plus Load & Travel Analysis Software
- MESURgauge Plus starts and stops models ESM303, ESM303H, ESM750,ESM750S, ESM1500, and ESM1500S motorized test stands, coordinating motion control and data collection with just one click


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
Spare USB cable
Spare rechargeable battery
AC adapter, with USA Plug
AC adapter with Euro Plug
AC adapter with UK Plug
AC adapter with AUS Plug
In stock
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