Watch Strap Spring Bar Measuring Tool Watchmaker Tools Sizing Gauge Case Band

Universal spring bar and strap width gauge covering every standard size from 8mm to 22mm in one tool.

⭐ At a glance

📏 Measures spring bar and lug width from 8mm to 22mm

✅ Useful for sizing straps on Seiko, Citizen, Rolex, Omega, Tissot, Hamilton, Longines, Casio, Timex, Tag Heuer, Bulova, Fossil, Accurist, Sekonda and other watches

📦 One gauge tool

✔️ New with tags

Specifications

• Brand: Unbranded
• Type: Spring Bar
• Compatible Brand: Seiko, Citizen, Rolex, Omega, Tissot, Hamilton, Longines, Casio, Timex, Tag Heuer, Bulova, Fossil, Accurist, Sekonda
• Type of Tool: Measuring tool
• MPN: Does Not Apply
• Condition: New with tags

🔧 What it does & how to use

This gauge takes the guesswork out of fitting a replacement watch strap or spring bar. Simply slide the lugs of your watch case or the ends of your old strap into the graduated slots on the gauge until you find the slot they sit snugly in — the number shown is your strap/spring bar width in millimetres, from 8mm up to 22mm in the standard increments used across the watch trade. It's handy for hobbyists replacing their own straps and for professional watchmakers and repairers who need a fast, accurate size check before ordering parts. No batteries, calipers or maths required — just measure and match.

⚠️ Please check you measure the spring bar/lug width (the gap between the lugs where the strap fits), not the case diameter, as these are different measurements and mixing them up will give the wrong strap size.