Ronda Balance Staff Reference Data Spares Repairs Vintage Watch Information

174-page Ronda balance staff reference manual, originally produced in 1965 and supplied ready to use on a USB memory stick.

⭐ At a glance

📏 174 pages of reference data

✅ Covers watchmakers from AS to Zodiac

📦 Supplied on USB memory stick, PDF format

🔧 What it does & how to use

This is an essential identification tool for any watchmaker working on vintage movements. It lists the correct Ronda balance staff number and interchangeability data for a huge range of makers from AS to Zodiac, plus a dedicated section giving exact balance staff dimensions where a direct cross-reference isn't available.

• Load it up: plug the USB stick into a computer and open the PDF.
• Identify the movement: find the watchmaker/manufacturer in the listings, AS to Zodiac.
• Find the staff number: read off the matching Ronda balance staff reference and interchangeability data.
• No listed match: use the dimensions section to measure and identify the correct staff by size instead.

⚠️ Please check this manual was produced in 1965 and covers vintage watch movements only — it does not include modern calibres.