Silbermann's apparatus Sound pipes Spectrophotometer Spectrograph Spherometer Stalagmometer Standard resistance of Siemens String galvanometer Tangent galvanometer Telescope with reading scale Tesla's apparatus Theodolite Thomson's galvanometer Thomson's astatic galvanometer with scale

Tourmaline Tube with cross Universal galvanometer for demonstration pourposes Universal lens holders Vacuum tube Variable resistance Vertical electromagnetic tuning fork Voltameter Volta's pistol Weatstone bridge Zamboni's dry cell