Designer: Stan Bray A small vertical four column steam engine to be built at minimal cost from stock materials. Presented on three Sheets, the drawings show all necessary details which are dual dimensioned in imperial & metric units for the convenience of builders with access to metric tools & equipment. ME. Vol.172. Sheet 1 General arrangement elevations & details of top, motion & baseplates & supporting pillars. Sheet 2 Cylinder components: cylinder, cylinder base, top cover & gl&, piston assembly, steam chest & cover. Sheet 3 Main bearings, connecting & valve rods, crosshead & gudgeon pin, slide valve, crankshaft & crankpin, eccentric sheaf & strap.