You might wonder why [Kevin] wanted to build digital calipers when you can buy them for very little these days. But, then again, you are reading Hackaday, so we probably don’t need to explain it ...

Moiré patterns are a thing of art, physics, and now tool design! [Julldozer] from Mojoptix creatively uses a moiré pattern to achieve a 0.05 mm precision goal for his custom designed 3D printed ...

Most digital calipers switch easily between inches and millimeters. Many (though not all) also offer the readout as a fraction as well as a decimal (1/8th or 0.125, for example).