Specifically designed to achieve quick, accurate Inside Diameter measurements of O-Rings and other soft-walled parts.

Resolution is ±.001" (±.01mm) with an accuracy of ±.003" (±.09mm) on standard range tapes up to 36" (900mm).

Tapes starting between 36"-72" (900-1800mm) and extended range tapes (tapes with over 12"/300mm of usable range) have a resolution of .001" (.01mm) with an accuracy of .005" (.14mm).

Thickness for (1/4" X 1/2") Clock Spring, Blue Or White Easy .005". For Stainless Steel .006".

Specialty sizes, widths and larger tapes are available upon request.