A circa 1920 Elgin No. 4 with plain-bearing headstock--and fitted with a Wade compound slide rest; there being a good deal of  interchangeably of parts between the more common American producers of precision bench lathes: B.C.Ames, Hjorth, Potter  Pratt & Whitney, , Rivett, Stark, Wade, Waltham Machine Works, Wade,  Pratt & Whitney, Rivett, Cataract, Hardinge, Elgin,, Remington, Sloan & Chace,