Quick Tip: Measure diameter of a circle

Measuring a circle is easy if you have a set of calipers large enough. Since most calipers only measure up to 6″, larger items such as a bucket are difficult to measure accurately.

This quick and easy method has saved me tons of time.

Tools needed:

  • Framing square
  • Speed square
  • 3 Clamps
  • Tape measure
  1. Clamp the framing square to a flat work table.
  2. Flip the circle (or bucket over) and slide it into the corner of the framing square.
  3. Slide the speed square up against the side of the bucket and clamp it in place.
    Too much pressure against the bucket will deform it and skew your measurement.
  4. Remove the bucket and measure the remaining gap between the squares.