Precision Outside/Inside Diameter Tapes
Pi Tapes

PROSCO Inc. is an authorized dealer for Pi Tape®
-- the original precision diameter measuring tape --

The standard Imperial tapes (inches) read to 0.001” diameter with an accuracy of ±0.001” up to 144 inches.
The standard metric tapes (millimeters) read to 0.01mm diameter with an accuracy of ±0.03mm up to 3,600 millimeters.
In addition, we can construct precision measuring tapes with customized lengths and widths to meet your every need.

PROSCO Inc. offers genuine Pi Tape® tapes for very fast and accurate diameter measurement of round products such of rollers, belts, pipes etc.
Each Pi Tape brand precision measuring tape is delivered with a Calibration Report traceable to the National Institute of Standards and Technology and all calibrations are performed in accordance with ANSI/NCSL Z540-1-1994, ISO/IEC 17025, ISO 10012-1, MIL-STD 45662A and 10CFR, part 21.
These precision diameter tapes are manufactured to exacting standards in temperature controlled facilities at 68°F (20°C). The lines and numerals on our standard tapes are engraved and acid etched on a ground surface. The tapes have fixed readings that do not require periodic adjustments.