Set of 20 Metallic Ores, Cardboard Box Pack Size_15 Ten-pack of 19mm steel ball

Ten-pack of 19mm steel ball bearings with uniform mass and dimensions

Supplies air-pressure changes to the PH0150A Boyle's Law apparatus through a foot-operated pump

this Jolly's photometer turns the inverse-square law into a measurable observation

and twelve 50g slotted weights for vector-addition work

each with an 8-inch external probe on a 36-inch cord for class-wide temperature measurement from -50 to 300°C at ±1°C accuracy

Set of 20 Metallic Ores, Cardboard Box Pack Size_15 Ten-pack of 19mm steel ballSet of 20 metallic ores supplied in cardboard box . Set of 20 metallic ores supplied in cardboard box . Each specimen labelled with name.