Martindale MM39 Standard Digital Auto Ranging Multimeter


The MM39 is an auto-ranging multimeter with a large rotary switch for easy selection of the required test, even when wearing gloves. There are two test buttons, one to lock the range and the other to hold the results which are displayed on a 3½ digit LCD screen.

The main test functions are AC voltage and DC voltage and current and resistance. The MM39 measures both AC and DC voltage between 0.1mV to 600V and AC and DC current between 10mA to 10A. There is a diode test and an audible continuity test which sounds at less than 25Ω.

Key Features

  • 600V AC / DC
  • 10A AC / DC
  • Resistance to 20MΩ
  • Diode & Continuity Test
  • Data hold
  • 600V CAT III safety rating
Display: 3½ digit
Voltage AC: 0.1mV-600V(5 ranges)(50Hz-500Hz)
Voltage DC: 0.1mV-600V (5 ranges)
Current AC: 0.01A to 10A (50Hz to 500Hz)
Current DC: 0.01A-10A
Resistance: 0.1Ω-20MΩ in 6 ranges
Features: Continuity, diode test
Audible indication: Less than 25Ω
Weight: 315g approx.
Dimensions: 145 × 70 × 34mm
Includes: TL16 leads, 2 x 1.5V battery and manual
Safety: CAT III 600V
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