4" Brass Sliding Caliper, 100 mm, Notched Jaws for Jewellery and Watch Measurement, Gem and Bead Gauge | Watch & Clock Tools | Toolsmith Ltd UK

4" Brass Sliding Caliper, 100 mm, Notched Jaws for Jewellery and Watch Measurement, Gem and Bead Gauge

£9.99
Sale price  £9.99 Regular price 
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4" Brass Sliding Caliper, 100 mm, Notched Jaws for Jewellery and Watch Measurement, Gem and Bead Gauge | Watch & Clock Tools | Toolsmith Ltd UK
SKU: QN-51T2-8F07

4" Brass Sliding Caliper, 100 mm, Notched Jaws for Jewellery and Watch Measurement, Gem and Bead Gauge

£9.99
Sale price  £9.99 Regular price 
In stock — ships from our UK warehouse
Order in for same-day dispatch
Free UK delivery
30-day returns
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Dispatched todayIf ordered before 2pm
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For jewellers and watchmakers needing reliable inside-diameter measurements, this UK-stocked brass sliding caliper is a workshop staple. Its non-magnetic construction and notched jaws are ideal for accurately sizing rings, bezels, and watch components without risk to delicate movements.

Key features

  • Solid brass construction prevents magnetising watch movements or scratching delicate workpieces.
  • Notched jaws are specifically shaped for taking accurate inside-diameter measurements.
  • Dual metric and imperial scales are clearly etched onto the body for easy reading.
  • A knurled brass thumbscrew locks the sliding jaw securely for transferring measurements.
  • Provides a full measuring range of 100mm / 4 inches for common bench tasks.

Who it's for

A practical measuring tool for UK bench jewellers, horologists, and clockmakers. Also favoured by model makers and engineers who require a non-marring, non-magnetic caliper for working with delicate materials and components.

Specifications

  • Material: Solid Brass
  • Measuring Range: 100mm / 4 inches
  • Scales: Metric (mm) and Imperial (inches)

Free UK delivery · Same-day dispatch before 2pm · 30-day returns

Specifications
Material Stainless steel
Dimensions Approx. 100mm
Finish Satin, precision finish
Compatibility Watch repair, horological bench work

Is this the right tool for you?

Best for

  • UK bench jewellers sizing rings and bezels
  • Horologists measuring watch components without magnetism
  • Clockmakers requiring non-marring internal measurements
  • Model makers working with delicate, non-ferrous materials

Not for

  • High-precision engineering where digital resolution is critical
  • Measuring outside diameters with maximum accuracy
  • Industrial environments requiring hardened steel tools

How this compares

4" Brass Sliding Caliper,... Alternatives
Material Solid brass construction Standard stainless steel or plastic
Jaw Design Notched for accurate inside diameter measurements Standard flat jaws for general purpose use
Magnetic Properties Non-magnetic, safe for delicate movements Magnetic, unsuitable for watchmaking
Stock Location UK-stocked with same-day dispatch Direct import, longer lead times

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