SPI 13-430-4 PI Tape Precision Diameter Tape, Range: 0.5" - 7"

Features:

• Tape are manufactured in temperature controlled facilities to insure accuracy
• All graduations are engraved and etched on a ground surface
• Tape read to 0.001" diameter
• Accuracy: ±0.001" to 144"
• Certificate traceable to NIST furnished with tape

Quick and easy method of reading true diameter of round and out-of-round forms