Size large diameter nuts, bolts, studs & washers, inch & metric. From 3/4" to 2" & 20mm to 50mm.

On the reverse side you can size UNF & UNC nuts from 3/4" to 3".

Rivet Gauge, Internally Threaded Screw Gauge, Drill & Tap Gauge & Drill Bit Gauge.

3 Gauge Set.