Moore & Wright Firm Joint Outside Caliper - 300mm
Best current price£67.95from OnBuy.com
Best offers
Shopping.co.uk recommended and popular offers
OnBuy.com£67.95Visit shop Moore & Wright Firm Joint Outside Caliper 5063750552071
Visit shopOnBuy.com£67.95Visit shop One Offer
1 offer from £67.95
View price history by clicking the chart icon.
OnBuy.comMoore & Wright Firm Joint Outside Caliper 5063750552071
Free delivery in 1–3 days
£67.95
Visit shop
Product Information
Full details
The Moore & Wright Firm Joint Outside Caliper (300mm) is designed for professionals and hobbyists requiring precise external measurements. Its key benefit is the rigid friction joint that maintains accuracy without play, ensuring reliable results for machining, fabrication, and inspection tasks. A potential caveat is that the effective leg length is not the maximum measurable capacity; the tool's capacity is generally one-third greater than its stated leg length.
All features
| Model Part Number | UTTK3125 |
|---|---|
| Brand | Moore & Wright |
Extended Product Information
FAQs
What does 'firm joint' mean?
A 'firm joint' means the caliper's legs are held in place by a friction nut and screw mechanism that resists movement, ensuring the caliper stays set to a measurement without slipping during use.
How do I determine the maximum measurement capacity?
The listed size (300mm) is the effective leg length. The total measuring capacity is generally about one-third greater than the effective leg length due to the geometry of the caliper legs.
Are these calipers suitable for internal measurements?
No, these are 'outside calipers' designed specifically for measuring external dimensions. Moore & Wright also offers inside calipers for internal measurements.
How should I clean and maintain the calipers?
Wipe the calipers with a soft, dry cloth after use. For stubborn marks, use a lightly dampened cloth and ensure the tool is dried thoroughly. A light application of oil can prevent rust on the steel surfaces, especially in humid environments.
What is the BS3123 standard?
BS3123 is a British Standard that specifies requirements for the design, dimensions, and performance of calipers, ensuring a certain level of quality and usability.
Can I adjust the firmness of the joint?
Yes, the firmness of the joint can be adjusted by tightening or loosening the large headed nut and screw assembly.
Troubleshooting
Joint feels too loose and slips
Gently tighten the screw assembly using a small screwdriver or appropriate tool. Avoid overtightening, which can make adjustment difficult.
Difficulty in fine adjustment
Ensure the threads on the screw and nut are clean and free of debris. Slightly loosen the main nut if it feels overly tight, then re-adjust for a firmer hold.
Inaccurate measurements
Ensure the caliper legs are clean and free from burrs or damage. Verify the caliper is being used correctly on the external surface to be measured. Always ensure the joint is set firmly.
Pros and Cons
Pros
- Rigid and stable joint prevents measurement drift.
- Durable construction from polished tool steel.
- Conforms to established British Standards for quality.
- Large adjustment nut for precise control.
- Suitable for a wide range of external measurement tasks.
Cons
- Capacity is not immediately obvious from leg length alone (requires calculation/understanding of BS3123 standards).
- Requires careful handling to maintain precision.
- May be less suitable for very delicate or small-scale work compared to finer-point calipers.
Setup, Compatibility & Care
Setup: These calipers are ready for use out of the box. Adjust the nut and screw assembly to open or close the legs to your desired measurement. Ensure the joint is firm enough to hold its position without slipping.