Invar Cubic Inch

An extremely precise cubic inch. It's made of Invar, the most dimensionally stable metal alloy in existence. The material has formerly been used for absolute standards of length measurement.

It's a desk object, a measurement tool, and a fun thing to absentmindedly fiddle around with while you're stuck on a conference call.

• 1" x 1" x 1" (25,4 mm) Invar cube
• 0.001" precision (half the thickness of printer paper)
• 133 g