Profile: Physics Instruments Co. is specialized in providing potentiometers, generators, power supplies, semiconductor devices, magnetometrs, trainer kits, oscillators and bridges. We offer ultrasonic interferometer to measure velocity of sounds in liquids. The apparatus consists of high frequency generator, measuring cell and connecting cable. We also supply digital potentiometer, 10 wire potentiometer, semiconductor diode, battery eliminators, burette stand, compact Kelvin double bridge, conductivity meter, Crompton type dial potentiometer, decade capacitance box and deflection magnetometer.