3M 39057, Scotch Duct Tape 910-MMD-C, 1.88 in x 10 yd (48 mm x 9,14 m), 7100183288 
Insize 7381-T2S, MEASURING TIPS FOR SCREW THREAD MICROMETER, 10 pairs/set, 6928640306914
$267.74
Whitworth thread (55? thread angle).
10 pairs/set
55? thread angle
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