Here’s a very unusual piece of training equipment made by the Narragansett Machine Company: The Captain’s Wheel. It was obviously an adaptation of the steering mechanism of a vessel, albeit, this version had a friction brake which allowed for increased resistance. Using this device a trainee could build a “different” kind of rotational strength by twisting or wrenching it from side to side. This was marketed specifically for wrestlers.
Also, just to give you an idea of the type of quality that the Narragansett machine Company was known for, the arms were made of Ash, the rims were made of Cherry and the mountings consisted of polished brass — very “steam punk.” This piece of equipment dates to about 1905.