Because today's circumference tapes also have to satisfy high medical demands, seca has developed the seca 201 which can measure girth to within 1 millimeters. The high-quality mechanics guarantee that the 205 cm-long tape unwinds easily and locks in place precisely. The housing sits comfortably and securely in the user's hand and is tough enough to withstand accidental dropping. Measuring range 15 - 205 cm / 6 - 80" Graduation 1 mm / 1/8" Weight about 55 g