Regnault's Hypsometer Category_Glassware illustrating the primary-battery chemistry behind

illustrating the primary-battery chemistry behind the Leclanche cell — the historical predecessor of the modern dry battery

Six-metal specific-heat cylinder set — copper

Half-wood-half-metal 200 by 30mm cylinder demonstrating thermal-conductivity differences through a wrapped paper that scorches over wood but stays uncharred over metal in flame

vascular bundles

One-meter single-wire potentiometer with 24 SWG constantan wire stretched along a millimeter scale

Regnault's Hypsometer Category_Glassware illustrating the primary-battery chemistry behindDouble 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.