Measurement (n.) applies to everything that has extension, but that never makes numbers the ground of what space is.
Measurement (n.) is only derived by depriving place of its worldhood; from turning “a good long walk” into “four kilometers.”
Measurement (n.) of time exists because we already need and use time, take it or let it pass — the clock only regulates a prior having.
Measurement (n.) of time forces us to say 'now', yet in getting the result we forget what was measured — nothing is left but a number and a stretch.
Measurement (n.) of time makes it public as 'now and now and now', a stock of nows lying around for everyone — though measuring never looks at time as such.