Bucyrus Erie Dynahoe, S.S. White Industries oil pressure gauge. 0-100 psi, 0-700 k/pa, 12 volt, 2 3/8″ overall diameter and for use with 2″ hole. Part number is unknown. The mounting bracket is NOT included. New old stock item not in original packaging. Skippers Marine specializes in new old stock, recycled and those hard to find marine parts and accessories. Please check out my other Ebay store items. Don’t see what you are looking for? Feel free to send an email request. 5-9682