Contraction Ruler LUFKIN RULE CO SAGINAW USA No 2710 Steel Rule 24” 1909

Category

Levels, Rules & Tapes

Store

eBay

Pattern makers shrink rule / contraction rule LUFKIN RULE CO SAGINAW USA No 2710, 24", imperial markings. It has scale allowing for shrinkage 1/60 and 1/120/. Skip this bit if you already know what a contraction rule is: a pattern is needed when a product is made by casting e.g. by pouring molten iron into a sand mould.

23.6 GBP