Linear Expansion Apparatus with Aluminum, Brass, and Iron Rods, 18cm Subject_Zoology this two wire potentiometer mounts on this two wire potentiometer mounts on a metal base for stability during extended laboratory measurements Polished wood board with three constantan wires (1 0 Cast iron uprights support a 38cm expansion bar against a friction pointer dial reading 0 to 90 degrees and iron rods for linear expansion comparison
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Linear Expansion Apparatus with Aluminum, Brass, and Iron Rods, 18cm Subject_Zoology this two-wire potentiometer mounts on