בידספיריט | Hess Wind-Up Dynamo Circa 1908
Hess Wind-Up Dynamo Circa 1908 - This steam accessory could be operated by hand or connected via a pulley to a live steam stationary steam machine.
Hess Wind-Up Dynamo Circa 1908 - This steam accessory could be operated by hand or connected via a pulley to a live steam stationary steam machine.