This distraction comprises everything you could possibly want to know about our U.S. coins except the composition ... too depressing.

A quarter is actually a useful measuring device unless you already have a ruler in your pocket protector.   The diameter is just under an inch and the thickness is about 70 mils.

If you're really desperate for a measurement, you can roll the quarter along the surface.  Each complete rotation covers three inches.

Dimensions below are metric.

coin	front	back	diameter	thickness	weight
penny	A. Lincoln	Lincoln Mem.	19.1 mm	1.55 mm	2.5 g
nickel	T. Jefferson	Monticello or westward	21.2 mm	1.95 mm	5.0 g
dime	F. Roosevelt	torch, olive, oak	17.9 mm	1.35 mm	2.27 g
quarter	G. Washington	eagle or state	24.3 mm	1.75 mm	5.67 g

 The New Distraction