Silk Cloth Square for Static Demonstrations, 12 x 12" Material_Bristle and troubleshooting exercises

and troubleshooting exercises

and inner ear sections support detailed auditory anatomy teaching at 3x enlargement for classroom visibility

Aluminum-cased 4-inch plotting compass with a glass face

Bending and curving along its 220mm length

Two-inch vinyl-coated fingers on this three-finger extension clamp mount to a swivel boss head fitting rods up to 18mm

Silk Cloth Square for Static Demonstrations, 12 x 12" Material_Bristle and troubleshooting exercisesUsed to draw electrons from glass and ebonite rods during rubbing, this silk square gives friction rods a strong positive charge for triboelectric and electrostatic demonstrations.