A graduated one piece wood or metal measuring instrument, used in pattern making. The graduations are adjusted to compensate for the shrinkage of metal casting. The shrinkage of cast metal varies and shrinkage rules are made in various graduations. For combination square "shrink" blades, see blade, combination square.
Classification: Other measuring or checking instruments, appliances and machines, nesoi in chapter 90
NSN 5998-01-579-9202
NSN 6150-01-584-3206
NSN 5935-01-278-6628
NSN 6650-00-931-8898
NSN 5996-01-628-2962
NSN 6240-01-592-1261
NSN 5895-00-004-2753
NSN 5996-01-572-9530
NSN 6240-01-521-2921
NSN 5915-00-909-0635
NSN 6145-00-959-4489
NSN 6620-01-464-6762