Linear Expansion Apparatus with Aluminum, Brass, and Iron Rods, 18cm Electricity & Magnetism_Magnetism micrometer screw

micrometer screw

Three-part medical-quality human skull model with a removable calvarium and articulated mandible

providing a standard method for cumulative rainfall measurement

Fourteen-specimen solid materials kit in assorted shapes across brass

each with a removable threaded hook for mass-and-density comparison in pendulum-period investigations

Linear Expansion Apparatus with Aluminum, Brass, and Iron Rods, 18cm Electricity & Magnetism_Magnetism micrometer screwCast iron uprights support a 38cm expansion bar against a friction pointer dial reading 0 to 90 degrees, supplied with aluminum, brass, and iron rods for linear expansion comparison.