7.62 mm Incremental Headspace Gauges Set.

[nzl1a1collector]

Wot...., no 1.643, the reject gauge for the old L1A1. Maybe the factory only allowed up to 1.642

The Australians had a different set of Specs for their headspace gauges:-

1.6325 inch (ACCEPT)

1.6380 inch (REJECT)

1.6400 inch (CONDEMNING)

The gauges are laid out as above.

From Left to Right:
Original Mk. 1 Gauges.

Modified Mk. 1 Gauge (1.6400). The rims were removed to stop them being damaged when someone leaves the extractor in.

Later 'stepped' gauges I guess they would be called the Mk. 2? Although I haven't found anything official calling them the mark 2 gauge.