Chronograph Repair – Need a tech manual for a vintage chronograph? The entire Esembl-O-Graf series is an incredible resource. While CDs are still sold on eBay for about $20, you can now access the full series for free at the HathiTrust Digital Library.The archive provides comprehensive coverage for Rolex and Tudor (Valjoux-based movements), Omega and Tissot (Lemania-based movements), and the Venus or Landeron calibers found in Breitling, Heuer, and Gallet. Additionally, it includes technical data for Universal Genève (Martel movements) as well as Longines, Movado, Mido, and Angelus.
Elgin parts list and cross reference. This will allow you to type in the grade of your Elgin pocket watch, and show you all the part numbers for the various parts. You can also type in a part number and get a list of all grades using that part number.
Technical Guides and Manuals : A. Schild, Citizen, ETA, ISA, LeCoultre, Omega, Rolex, Seiko, many others.
More technical manuals and guides : Included are Bulova, Universal, Rolex, Longines, Omega, Valjoux, among others.
Seiko, Citizen, Orient Technical Guides and Manuals other misc manuals
ETA Technical info- technical documents from ETA. Here and here.
Miyota technical documents– free pdf downloads.
Omega information Different ways to search for information about vintage Omegas
Ranfft’s Watches– great for identifying movements, Search by caliber or you can also search by 3 letter code on balance bridge. Color pictures, dimensions, power reserve
NAWCC Chapter 149 has some excellent free technical manuals and books (free books in pdf format) on their pages. Click here to see their titles.
TM 9-1575– WWII military watch repair manual.
Watch Manufacturer’s Contact List
Individual Technical Manuals
Accutron 219 Service Manual – Part 1, Part 2.
Swiss Tuning Fork Manuals (Omega 1250, 1255, 1260, Also Longines, Baume & Mercier, IWC, Etc.)
Elgin 1915 Master Catalog includes nearly every original Elgin part number from before 1915.
Hamilton 500 Electric Repair and service
Hamilton 505 Electric Repair and service (505 info starts on book page 167)
Lecoultre Futurematic (thank you Mike Murray)