Quick Curves with Sockets

Sockets not only keep your machine bolts tight, they also make handy templates for drawing small arcs and circles. If you need an exact radius, be sure to measure the socket’s outside diameter with a caliper first. It’s also important to hold the pencil at a consistent angle while tracing around the socket; otherwise the curve you draw won’t be a perfect arc.

– Bob Kelland
St. John’s, Newfoundland