Resources
Cross-reference charts, part finders and ordering tools for the trade. Every chart links straight to the part in our catalog.
New
Caliber lookup
Specs, battery, stem and hand sizes for 850+ movements, with in-stock parts and special orders in one place.
For watchmakers
Batteries, movements, crystals, stems, hands, gaskets and oils.
- Watch battery cross reference Renata, Energizer, Seiko, Citizen, Timex, Bulova and Varta equivalents with sizes. Open
- Capacitor cross reference Citizen and Seiko capacitors matched to compatible calibers. Open
- Movement cross reference Replacement movements by brand and caliber, with specs and battery. Open
- Crystal measurement guide Measure diameter and thickness for a correct press fit, and compare acrylic, mineral glass and sapphire. Open
- Crown and stem identification Tap sizes and the measurements that match crowns and stems to a movement. Open
- Hand-fitting guide What 120 / 70 / 20 means and how to match hands to a movement. Open
- O-ring and gasket sizing Inside diameter, outside diameter and cross-section, and how to measure old rubber. Open
- Watch oil selection Which lubricant category goes on which part of the movement. Open
- Spring bar guide Measure the lug width and choose bar length and diameter. Open
- Glossary and conversions Ligne to millimetres, hand sizes, tap sizes and the terms used in our spec tables. Open
For jewelers
Sizing, setting, sawing, finishing, plating, soldering and testing.
- Ring size chart US sizes with inside diameter and circumference, plus how to size wide bands. Open
- Bur guide Round, hart, setting, bud, cup and more, and which job each shape does. Open
- Saw blade and gauge chart Blade sizes 8/0 to 1/0 by metal gauge, and B&S gauge to millimetres. Open
- Polishing sequence From file marks to a mirror finish, with a Dialux color chart. Open
- Plating basics The rhodium and gold plating sequence with operating ranges. Open
- Solder guide Hard, medium, easy and extra easy flow points, and plumb versus repair solder. Open
- Gold purity and testing Karat to fineness, hallmark standards and how acid, electronic and XRF tests work. Open
Ordering and account
Faster ordering, trade accounts and our programs.
Can't find your part?
Send us the part number, caliber or a photo and we'll find the match.