Disclaimer: The NAWCC has no commercial affiliation with any of these parts sources or service persons, and the listings herein do not represent any recommendation or warranty. This list is made available as a public service to assist our users to obtain uncommon and highly specialized chronometer parts and services. All transactions must be conducted privately and are at your own risk. Should any problems be encountered please report them to the forum Moderator. If you have any additions or suggestions for this list, please send a private message to the moderator. Historic Timekeepers Restoration Services and Supplies (USA): Dewey Clark specializes in the restoration and service of marine chronometers, deck watches and other precision watches. John Cronin (UK): An independent craftsman based in Stow on the Wold (United Kingdom), specializing in the restoration of marine chronometers and high grade watches. Larry Crutsinger (USA, Virginia): Supplies material for Hamilton Model 21, 22 and other Hamilton military timepieces. eBay: Replacement parts for Russian marine chronometers are routinely offered for sale on eBay. Most if not all of the sellers are located in Eastern Europe. Roy C. Harris (UK): UK Specialist in the Service and Restoration of Marine Chronometers. Ships Clock Cabinetry: Restores and builds replicas of the brass bound wooden boxes and carrying cases that housed Naval Chronometers from 200-year-old antiques to those of WW II vintage. They also have accessories for the boxes such as winding keys, leather straps, gimbal assemblies, and box hardware.