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Technical Manuals and Data Sheets

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Useful Websites for Technical Manuals



Chronograph Repair- Need a tech manual for a vintage chronograph?  The entire Esembl-o-graf series of books is a great resource.  Available as a CD on eBay for about $20. 

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.

SeikoCitizen,  Orient Technical Guides and Manuals other misc manuals

ETA Swiss Lab: near the bottom of the page on the right are links for the ETA 2892A2, 7750, 6497 and 251.471

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 214 Service Manual                                                                                              

Accutron 218 Service Manual

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 ElectricRepair and service or click hereor here

Hamilton 505 Electric Repair and service (505 info starts on book page 167) or click here or here

Lecoultre Futurematic (thank you Mike Murray)


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