3M 45097, Roloc Disc Pad TR, Extra Hard 2 in 1/4-20 Internal, 7000045284 
Dynabrade 52474 Vane Set (4pk) 
Insize 7382-112, 3-WIRES, .0352″/0.895mm, 6928640361814
$321.46
Used with standard outside micrometers with spindle .25″DIA to measure pitch diameter of screw threads.
Diameter accuracy: ?20_in. Cylindricity: 39_in.
Hardness: HRC60.
Supplied with manufacturer inspection certificate.
Related products
Measuring/ Inspection Instruments
Insize 0020-A199, VIBRATION PEN (THREE PARAMETERS), 6974029777059
$1,044.21
Measuring/ Inspection Instruments
Insize 4809, U.S. STAND SHEET METAL GAGE, 0-36(.3125~.0070″), 6928640330162
$35.18