Draper 51071 30 Blade 4 - 42 Tpi Unf and Unc Screwpitch Gauge Set

Draper-30-Blade-4-42-Tpi-Unf-Unc-Screwpitch-Gauge-Set-Draper-51071-p-Folding-leaves-individually-stamped-with-accurately-formed-thread-profiles-American-National-Thread-UNC-UNF-in-the-range-4-42TPI-Sold-loose-p-Draper-51071-30-Blade-4-42-Tpi-Unf-and-Unc-Screwpitch-Gauge-Set

Price: 8.72 from Rapid Online Rapid Electronics Ltd.