Max overall measurements are 17 cm (6 1/2 inches) x 15 cm (6 inches) x 15 cm (6 inches) maybe for juke box? It is partly chrome plated, copper fly wheel brushes are missing has gear reduction has electromagnet possibly part of clutch or brake we inherited it- it was for many decades in our late fathers display cabinet of radio museum he buil. T roughly 8 cm outer diameter- across bolts, thickness of black laminated steel 3.2 cm and diameter of the shaft is 7 mm approx. The item "Vintage motor chrome copper gear electromagnet brake electric motor educational" is in sale since Monday, April 22, 2019. This item is in the category "Antiques\Science/Medicine\Scientific Instruments".track" and is located in Spalding, Lincolnshire. This item can be shipped worldwide.