For more than 60 years, those working in the aerospace, automotive, steel forming and pipe industries have consistently relied on a simple, easy- to-use instrument that allows them to measure the true diameters of round and out-of-round forms quickly, precisely and economically.

Pi Tape brand precision diameter tapes are extremely accurate and cost effective. Recognized worldwide as the original, Pi Tape diameter tapes have become a standard for a number of industries because they are simply designed, easy-to-read and offer an infinite variety of uses.

Pi Tape brand precision measurement tapes are used regularly by the private sector and numerous government contractors.

Originally introduced in 1944, Pi Tape precision diameter measurement tapes are manufactured in the U.S. in temperature- controlled facilities using state of the art engraving and manufacturing techniques. Standard tapes are engraved and acid etched on a ground surface, featuring a fixed reading that does not require periodic adjustments.

Pi Tape gages are available in either inches or millimeters. Standard tapes marked in inches read to .001" with an accuracy of +/- .001" up to 144 inches. Standard tapes marked in millimeters read to .01mm with an accuracy of +/- .03mm up to 3600mm. Pi Tape's calibration lab is compliant with ANSI/NCSL Z540-1-1994; ISO/IEC 17025; ISO 10012-1; MIL-STD 45662A and 10CFR Part 21 and is ISO 9001 registered. Each tape comes with a certificate of accuracy traceable to National Institute of Standards and Technology (NIST).

In terms of speed, Pi Tape's quality diameter tapes have the advantage of being much faster to use than micrometers, calipers or laser-type distance measuring devices. With those instruments, the user must take several readings and then average them in order to get a fairly accurate diameter reading. With the Pi Tape diameter tape, simply wrap the gage around the form to get a diameter reading accurate to .001" or .03mm.

The Pi Tape brand product line includes direct outside or inside diameter measuring tapes, go/no-go tapes, linear tapes, circumference tapes and O-ring tapes. The company also manufactures custom specialty tapes to meet the specific uses and requirements of customers, such as wide and narrow tapes, special length tapes, and tapes with special markings. There are two easy-to-read styles available for low-light environments and stainless steel tapes for use in corrosive environments. Pi Tape also offers recalibration services for all its measurement products.