Bench Digital pH Tester, EI 0962 (Discontinued) Glass Dishes & Jars_Glass Jars Electromagnet-driven at approximately 80Hz with

Electromagnet-driven at approximately 80Hz with a captive thumbscrew on one prong for Melde's experiment

this low-resistance shunt diverts a precise fraction of circuit current around the meter so small signals stay within full-scale

75 x 2 inch chrome-steel horseshoe puts a stronger gap field on offer than the 4-inch model

outer core

Evacuated 2

Bench Digital pH Tester, EI 0962 (Discontinued) Glass Dishes & Jars_Glass Jars Electromagnet-driven at approximately 80Hz withDiscontinued benchtop digital pH meter designated EI 0962, measuring sample acidity on a fixed workstation in laboratory quality control and teaching environments.