Description AN educational model / teaching aid model / cross-section of a two-stroke engine used in mechanical and technical schools in Poland during the Polish People’s Republic. This is quite a rare cross-section from the 1960s in original condition, very good for its age. After turning the crank, the piston shows the work and principle of operation, and the lamp lights up to show the ignition process. ERA 1900-2000 MATERIAL Plastic, Steel, Wood CONDITION Good condition – used with small signs of aging & blemishes WEIGHT 2 kg DEPTH 12 cm HEIGHT 40 cm WIDTH 20 cm ESTIMATED PERIOD 1960-1970
