PYE
SCIENTIFIC INSTRUMENTS AND APPARATUS-NAMELY, COMBINED PIRANI AND IONIZATION GAUGES, NANOAMMETERS, HIGH RESISTANCE TEST SETS, GALVANOMETERS, AMMETERS, VOLTMETERS, THERMOCOUPLES, THERMOCOUPLE SWITCHES, THERMOCOUPLE GALVANOMETERS AND THERMOCOUPLE TEST SETS, YOUNG'S MODULUS APPARATUS, SURFACE TENSION TORSION BALANCES, THERMAL CONDUCTIVITY OF COPPER APPARATUS, CHEMICAL THERMOMETERS, TUNING FORKS, FLECTROMAGNETS, FLUXMETER AND SEARCH COILS, MAGNETIC COMPASSES, MICROSCOPES, TELESCOPES, CATHETOMETERS...
Expired · October 10, 1960 · 72106138 ·