Details
A MODEL STIRLING CYCLE HORIZONTAL HOT AIR ENGINE,
BY SOLAR ENGINES WITH PYREX GLASS DISPLACER AND POWER CYLINDERS, DISC CRANKS AND PIERCED DISC FLYWHEEL, BURNER, FINISHED IN BLUE, BLACK AND POLISHED/PLATED BRIGHTWORK, WOOD MOUNT -- 4 X 9¼IN. (10.2 X 23.5CM.). INSTRUCTIONS; AND ANOTHER HOT AIR ENGINE WITH CONCENTRIC CYLINDERS AND TWIN SPOKED FLYWHEEL AND BURNER -- 9IN. (22.8CM.) LONG (2)
BY SOLAR ENGINES WITH PYREX GLASS DISPLACER AND POWER CYLINDERS, DISC CRANKS AND PIERCED DISC FLYWHEEL, BURNER, FINISHED IN BLUE, BLACK AND POLISHED/PLATED BRIGHTWORK, WOOD MOUNT -- 4 X 9¼IN. (10.2 X 23.5CM.). INSTRUCTIONS; AND ANOTHER HOT AIR ENGINE WITH CONCENTRIC CYLINDERS AND TWIN SPOKED FLYWHEEL AND BURNER -- 9IN. (22.8CM.) LONG (2)