Mounted Magnetometer Subject_Botany and a wrist-pin string across

and a wrist-pin string across a 720mm bridge span on a 1290 x 130 x 110mm hollow wooden sounding box

Double-vessel copper calorimeter set with a 75 by 50mm inner cup on cork supports inside a 100 by 75mm outer shell and a slotted lid

Packaged as a biodegradable classroom kit

Stamped with element symbols for quick identification

this Alnico U-shape carries 45mm pole spacing for compact-bench field demonstrations and motor-effect setups

Mounted Magnetometer Subject_Botany and a wrist-pin string acrossPolished non warping wooden base with a built in meter scale carries a compass box magnetometer, sized for measuring direction and field strength on the lab bench.