Groz Digital Indicator, with 8mm Stem, 0-0.5" 16220 Disc Tool then you need the Tire

then you need the Tire Valve Removal Tool

4 Ply (3 bx)

Authentic Milton® washers recommended for use with all M-Style or T-Style Milton® coupler connections

Includes connecting hose

Relief valve kit for 1/2” discharge pumps

Groz Digital Indicator, with 8mm Stem, 0-0.5" 16220 Disc Tool then you need the TireGroz Digital Indicator, with 8mm Stem, 0 0. 5" 16220 Short Description Groz 16220 Digital Indicator, with 8mm Stem, 0 0. 5" Range, 0. 0005" Resolution Description Versatile range of dial indicators suitable for both inch and metric measurements Useful for absolute and tolerance measurement which allows for measure of upper and lower tolerances Supplied with flat & lug back Complete with Cr2032: 3V battery Range: 0 1 2 inch