Machinist's guide for model propeller

machinist's guide for model propeller

PATTERNS & MOLDS
Wild, Otto Jr.
USA, CT, West Hartford
circa 1932
tin; wood
overall: 7 x 4 1/4 in.

Homemade machinist's guide or pattern for making model propeller used on pond model SKIPPY; bottom section is from a tin can which has three helical slots cut into side, is screwed into a red, circular wooden piece, which in turn is bolted to a half-round piece of wood which has 2 bolts threaded sideways into 2 drilled holes; removable metal threaded "cap" on top. Used in machining model propeller from a solid block of brass.

2003.9.6