Old-school contraptions still work for weighing astronauts
Without gravity, measurement relies on body’s effect on mechanical oscillations
SPACE BOUNCE Aboard the International Space Station, astronaut Andre Kuipers measures his weight using the pogo-stick-like Body Mass Measurement Device, which uses spring oscillations to determine mass.
NASA
New method to measure mass in space devised — A scale for measuring weight in space that does not depend upon the attraction of gravity has been devised….