Machinists work in tenths (and thousandths) of an inch every day! Try using a Caliper or a Micrometer and measuring in fractions of an inch instead of decimals.
And yes, when your eyes start to go, you cheat and use digital readouts.
(bad example because it's in metric and worked out to a simple fraction, but you get the idea... just throw the switch from MM to Inches and there you go)
and 1/10 != 1/64