PM Research No.6 horizontal engine

Castings for a PM Research #6 horizontal mill engine from the USA, based on an original design listed as a set of castings in 1895 for home machinists by the Charles A. Strelinger Co. of Detroit, Michigan.

There's a well-documented build diary posted back in 2010 here showing how a very capable engineer Stateside built a fine example in 75 hours with modest-sized machinery.