Waist to hip ratio is an indirect measure of abdominal fat distribution and it feeds into cardiometabolic risk assessment. The seca 203 takes the two circumference measurements and does the calculation for you, using a metal ratio scale built into the housing.
The tape retracts, locks and reads from a printed side scale, so a single clinician can take both measurements and read the ratio without a calculator or a second pair of hands. The ratio scale is metal, which is why it survives daily use.
It suits dietitians, practice nurses, exercise physiologists and anyone running health screening where the ratio is recorded at every review.






