A spring joint caliper for metalworking and woodworking, designed for accurate layout and repeatable transfers. sourcing map Spring Joint Caliper suits jewellery makers and hobby machinists who need consistent marks and tight tolerances. Is the construction and fine adjustment robust enough for regular workshop use?
⚡ At a Glance
- • Measuring Accuracy: Hardened points and a fine adjusting nut deliver precise scribing and repeatable transfers
- • Best for: Jewellery makers, hobby machinists and draughting tasks that need consistent measurements
- • Not ideal for: High-precision metrology where digital readouts or vernier scales are required
Flat leg spring joint caliper with 250mm length and 200mm maximum opening. Forged stainless iron construction with hardened high-carbon steel points and fine adjustment for layout work.
Consistent Marks and Layouts - With hardened high-carbon steel points
Hardened points on forged high-carbon steel legs produce a sharp, repeatable contact mark. The legs are heat-treated to maintain edge hardness under repeated use.
Accurate scribing ensures matched pieces and even spacing for tasks such as jewellery wrapping or metal templates.
Fine Adjustment for Tight Tolerances - Thanks to the solid adjusting nut and spring joint
A screw-style adjusting nut lets the gap open and close incrementally, while the spring joint maintains steady tension for consistent transfers. Smooth motion reduces sudden jumps during setting.
Small diameter measurements and repeated transfers remain consistent, useful when sizing wire wraps or matching holes.
Long Service Life under Workshop Use - With forged stainless iron construction and heat treatment
Forged stainless iron body undergoes overall heat treatment to improve wear resistance and part stability. Surfaces are finished smooth and leave little or no burr.
Durable construction reduces frequent replacement and keeps accuracy over time for regular hobby or light professional use.
✨ The 4 Key Reasons for sourcing map Spring Joint Caliper
- Hardened high-carbon steel points - Produce crisp, repeatable scribe marks for matched pieces
- Solid adjusting nut - Enables controlled, fine increments for precise transfers
- Max 200mm opening - Covers most small to medium workshop and jewellery measurements
- Burr-free finished surface - Smooth operation and reduced risk of snagging delicate work
📋 Technical Details at a Glance
- Category: Spring joint caliper
- Length: 250mm overall
- Width: 225mm overall
- Capacity (Max open): 8 inch / 200mm
- Material: Forged stainless iron
❓ Frequently Asked Questions
Q: What is the maximum opening of the caliper?
A: The maximum opening is 8 inch / 200mm, as stated in the product description.
Q: Is it suitable for jewellery making and small measurements?
A: User feedback highlights suitability for jewellery tasks such as wire wrapping and small, detailed measurements.
Q: What materials and construction ensure durability?
A: Forged stainless iron construction with heat treatment and hardened high-carbon steel points provides wear resistance, a smooth surface and long service life.
🏆 Our Verdict
Suitable for jewellery makers, hobby machinists and anyone needing reliable scribing and measurement transfers. Hardened points, a solid adjusting nut and forged stainless iron construction deliver repeatable accuracy and durability. The tool represents practical long-term value for workshops that require consistent manual layout work.
