Regnault's Hypsometer prop65 Used to read the microampere-scale

Used to read the microampere-scale currents found in photodiode and transistor-bias circuits

including 100 long flexible bonds for delocalized representations and crystal-lattice construction at scale

One-meter wooden lever graduated in centimeters on a knife-edge fulcrum base

Cotton twin cord at approximately 30 meters long

Four 50 gram brass slotted masses paired with a 50 gram hanger

Regnault's Hypsometer prop65 Used to read the microampere-scaleDouble walled copper cylinder hypsometer at 34 by 6cm on a steam boiler, with thermometer tubulure and glass manometer for calibrating thermometer upper fixed points under steam.