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 5920-01-167-8869
NSN 7035-01-143-3573
NSN 4140-00-415-6513
NSN 5990-01-259-7138
NSN 6685-00-127-6204
NSN 5945-01-550-3807
NSN 5925-01-263-3846
NSN 5965-00-985-9157
NSN 6105-00-148-8279
NSN 6650-01-028-7024
NSN 5905-01-249-9937
NSN 6650-01-196-4667