Analog Multimeter with Chemical Resistant Glass Meter
Triplett Model 630 is a compact, rugged, analog multimeter. It has been designed to make fast, accurate measurements on all types of electrical and electronic equipment. The indicating portion of the meter is actuated by a taut band suspension movement having a sensitivity of 50 microampere full scale. This movement omits conventional pivots, bearings and hairsprings and provides increased repeatability by removing friction between both pivots and bearings. No moving parts are in contact and the elimination of the hairspring prevents both snagging and tangling. The tension spring acts as a built-in shock absorber. In addition, temperature variations will not cause sticky operation of the pointer.