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Home  >>  Products  >>  pH & Conductivity  >>  Milliohm-meter





The M210 Milliohm Meter is a portable, low resistance digital meter designed to measure over the range 0.001Ω to 200Ω. A high degree of accuracy is achieved by utilising a four terminal input to eliminate errors caused by test lead length. One of the most important features of the milliohm meter is its low (5mA) test current. This ensures the contact being tested is not ‘cleaned’ by the test current which can happen when higher test currents are used. This ‘cleaning’ of the contact under test leads to erroneous measurements.






  • 0.1% accuracy
  • Only 5mA test current
  • Single push button operation
  • Auto-ranging
  • Four terminal input
  • Auto switch-off after three minutes
  • 20 hours continuous operation (from standard PP3 battery)
  • Complete with leather case
  • Lightweight and portable
  • Powered by a single 9V (PP3, MN1604 or equivalent) battery (not included)
  • Applications: Relay, switch and connector contact, PC-plated through holes, PC track resistance, transformer and motor windings, ring circuit testing, earth conductor continuity, wire-wrapped and solder joints, RFI shielding and coil resistance, network cabling, aircraft bonding check


Technical Data

Technical Data
Ranges: 1.999Ω, 19.99Ω, 199.9Ω
Increments: 0.001Ω, 0.01Ω, 0.1Ω
Accuracy: ±0.1% of range
Zero Offset: ±0.001Ω
Maximum: V 1.4V
Maximum: A 5mA
Temperature Drift: 0.1%/°C of lowest range
Display: 3.5" digit LCD
Battery: 9V (PP3 MN1604 or equivalent)
Operating Temperature: 41°F - 95°F (5°C to 35°C)
Weight: 510gms (including case and leads)
Dimensions (in case): H 5.9", W 5.7", D 1.8"
Dimensions (out of case): H 5.9", W 32", D 1.5"


Instructions for Use

Using Standard Clip Leads M210/9A (supplied as standard)
  1. Plug either black plug into either black socket in the top of the instrument and red plugs into red sockets.
  2. Clip leads to circuit or component to be tested. Ensure that both faces of clip make good electrical contact.
  3. Press the ON button to read resistance.
Using Probe & Contact Connectors M210/9B (optional extra)
  1. Insert plugs into their respective sockets as illustrated. The outer plugs form the current circuit via the clips. The inner plugs (with yellow bands) connect the probes in the
    voltage measuring circuit.
  2. Clip leads to circuit under test.
  3. Press ON button to read resistance when the probes are in contact with the circuit.
Interpreting the Display
  1. The Milliohm-meter will read directly in ohms or milli-ohms.
  2. Fluctuating readings displayed. Check that the clips are making good contact with the circuit under
    test, then look for the cause of intermittency, e.g. dry solder joint, oxidized or corroded terminals;
    slight mechanical movement of the component(s) in the circuit under test should quickly reveal the
    source of the problem.
  3. Flashing “1” indicates that resistance in circuit exceeds 200 ohms.
  4. “LO BAT” displayed indicates low battery.
Battery Replacement
Slide down the cover at the rear, bottom of the instrument. Fit new battery 9 volt PP3 (MN1604 or equivalent). Replace cover.



Prices subject to change    Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only    Export orders require quotations - click here for a quote     For more info call us 1-800-762-2478 or 954-946-9454.
Item Number Item Prices

One Set of standard spring clip connectors, Leather case with strap, Leads, Instructions, and Certification and 2 Year Warranty
CD-9010 M210 Milliohm-meter $695.00
CD-9014 M210/9A Replacement Set of standard spring clip connectors 176.00
CD-9016 M210/9B Probe and contact connectors set 165.00
We are an established North American Distributor for Rhopoint Instruments, and have been providing, servicing, calibrating and certifying their high quality instruments for over 33 years.


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