Profile: Pi Tape Corp. specializes in providing diameter measuring tapes and custom measuring tools. Our products include outside diameter tapes, inside diameter tapes, circumference tapes and O ring tapes. Our precision diameter tapes are manufactured to exacting standards in temperature controlled facilities at 68°F . 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. Our standard imperial tapes (inches) read to 0.001 inch diameter with an accuracy of ±0.001 inch up to 144 inches. Our standard metric tapes (millimeters) read to 0.01mm diameter with an accuracy of ±0.03mm up to 3,600 millimeters. We are an ISO 9001 certified company. The brands we offer include Pi Tape™.