2-1522 HST.
Set of 5 pin protusion gauges:
3/8" - max prot .492, min prot .410.
5/16" max prot .452. min prot .370.
1/4" max prot .392. min prot .310.
3/16" max prot .362. min prot .280.
5/32" max prot .352. min prot .270.