GZ03600 | Groz 6pc Engineers Tool Set 6 Piece set of tools is fitted into a specially designed durable wallet with the contents detailed on the wallet. SET INCLUDES:. Inside Caliper 4in (100mm) (GZ-01401). Outside Caliper 4in (100mm) (GZ-01411). Screw Cutting Gauge (GZ-01223). Steel Rule 6in (150 mm) (GZ-01330). Pocket Scriber 3-1/2in (89mm) (GZ-03214). Centre Punch 5/32in (4mm)