The cone and tape are sold as a set.
The Parker Size Gauge for O-Rings is an exclusive Parker Seal Group device consisting of a uniquely marked plastic cone with special Cross-section measuring the base and a separate pi tape. The Parker O-Rings for gauges sizing device is used for checking any sample O-Ring up to eight (8.00″) inches in diameter to determine the nearest standard Parker Seal 2-dash size (corresponding to ARP568A standard series O-Rings).
NOTE: The device does not measure actual dimensions. Proper identification and markings appear on the cone and tape, making the device easy to read. The cone and tape are sold as a set.
The Cone Measures AS568A Standard Sized O-rings:
-001 through -041 O-Rings
-110 through -151 O-Rings
-210 through -235 O-Rings
-325 through -337 O-Rings
The Tape Measures AS568A Standard Sized O-rings:
-042 through -050 O-Rings
-152 through -171 O-Rings
-235 through -266 O-Rings
-338 through -369 O-Rings
-425 through -445 O-Rings