US$ 130.00
preserving the field between teaching sessions
Packaged as a biodegradable classroom kit
Stamped with element symbols for quick identification
preserving field strength between magnetism and field-line activities
and a wrist-pin string across a 720mm bridge span on a 1290 x 130 x 110mm hollow wooden sounding box
Mounted Magnetometer Subject_Botany preserving the field between teachingPolished 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.
US$ 130.00
US$ 130.00
US$ 80.00
US$ 120.00
US$ 125.00
US$ 122.50
US$ 10.99
US$ 107.50
US$ 117.50
US$ 85.00