One can convert surveying tenths to inches by multiplying them by a factor of 1 3/16. A tenth is equivalent to 1 3/16 inches, allowing for a very straightforward conversion in the field.
1 inch is equal to 0.0833 tenths of a foot, which is a useful relationship to memorise. This enables for a similarly quick conversion from imperial to decimal feet when necessary. If working with hundredths of a foot is tedious, 10 inches can be converted to 0.833 tenths and then divided by 10. Many rulers and measuring tapes are dotted with tenths, which lends a degree of precision to the measurement.