The Model 630 is a compact, rugged, portable volt-ohm-milliammeter. It has been designed to make fast, accurate measurements on all types of electrical and electronic equipment. Backed by a company making quality instruments and test equipment for over half a century.
The indicating portion of the VOM is actuated by the latest concept in instrumentation, namely, a taut band suspension meter having a sensitivity of 50 microampere full scale. This meter, by omitting conventional pivots, bearings and hairsprings provides the following advantages.
Increased repeatability by elimination of friction between both pivots and bearings.
Greater ruggedness and durability as no moving parts are in contact and the elimination of the hairspring prevents both snagging and tangling. Furthermore, the tension spring acts as a built-in shock absorber.
Temperature variations can not cause sticky operation of the pointer.