Evershed & Vignoles Megger Resistance Meter / Insulation Tester 500V, 10Kohm - 20Mohm

<p>The Megger is an instrument for measuring the insulation resistance of electrical devices. It was introduced by the British firm of Evershed and Vignoles.

Scale: 10 Kohm to 20 Mohm.
Output: 500V.
Uses a crank handle no batteries needed.</p>