Nice old Apple Dynamo in working condition. Length with shaft 9″ and 5″ in diameter and weighs over 21 pounds. Completely apart and new wires attached at the fields with new brushes fitted, makes electricity counter clockwise rotation from the shaft end. The shaft size is 1/2″ and the mounting holes are 4 1/8 x 2″ on centers. Rotated with electric drill and makes over 10 volts. Two small things i must mention a small nail for the lid hinge and a small amount of play on the brass out put shaft which does not affect the function. I do not know what the Dynamo was made for but probably was used in several applications years ago. I would think it would date to the 20/30′s. Very rare and hard to find item and it still has the original oil cups. The item “Dynamo Apple Dayton Ohio working condition hit and miss engine” is in sale since Thursday, May 03, 2018. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Other Antique Science Equip”. The seller is “rcgrandad-38″ and is located in Pilot Point, Texas. This item can be shipped to United States.