Silverline Inside Internal Spring Calipers 170mm 656583

Silverline Inside Internal Spring Calliper's 170mm 656583

Option: 656583

Barcode: 5055058117984

Product Overview:

The Silverline 170mm Inside Internal Spring Calipers are precision-engineered tools designed for accurate internal measurements. Commonly used by engineers, metalworkers, and woodturners, these calipers are ideal for gauging the internal diameter of bores, pipes, and recesses. Built with a hardened and tempered carbon steel frame, the tool maintains tension via a robust spring mechanism for consistent and repeatable measurements.

• 7 inch 180mm long Internal Calliper's are Manufactured from carbon steel,
• They have a knurled adjusting nut for fine adjustment setting.
• The Legs pivot on roller and are tensioned with a bow spring.
• Length 180mm Range 170mm

Key Features:

• 170mm (6¾") Jaw Length – Suited for a wide range of internal measuring applications

• Spring Tension Mechanism – Ensures uniform pressure for accurate and repeatable results

• Knurled Adjustment Nut – Enables fine, precise setting of jaw opening

• Hardened & Tempered Steel – Durable construction for workshop, lathe, or site use

• Polished Finish – Resists corrosion and provides smooth operation

Applications:

• Measuring internal diameters of pipes, tubes, and cylinders

• Checking bore sizes, grooves, and recessed features during turning or machining

• Suitable for use in engineering, metal fabrication, and woodturning

• Ideal for comparing workpieces to a known dimension or template

Specifications:

• Product Code: 656583

• Measurement Type: Internal

• Length: 170mm (approx. 6¾ inches)

• Material: Hardened and tempered carbon steel

• Adjustment: Manual screw and knurled nut

• Mechanism: Spring-loaded legs

Frequently Asked Questions:

1. Are these calipers suitable for measuring live dimensions directly?
   No, they’re transfer calipers—used to gauge and compare dimensions rather than directly read them.

2. Can I use them on both wood and metal?
   Yes, they’re suitable for internal measurement tasks across a range of materials.

3. Do they come pre-calibrated?
   No calibration is needed; they are manually adjusted for comparative measuring.

4. Is the spring adjustable or fixed?
   The spring provides consistent resistance and is not adjustable but designed for reliable tension.

5. What’s the maximum internal diameter they can measure?
   Approximately 170mm, depending on the spread and how they’re set.

6. Can I use these calipers with a digital or dial gauge?
   They are not digital; they are standalone tools for manual internal measurement for comparison.

7. How do I ensure accurate measurements?
   Carefully adjust the calipers using the knurled nut, then compare against a ruler or known standard.

8. Are they magnetic or non-magnetic?
   They are made of carbon steel and may exhibit magnetic properties but are not designed as magnetic tools.

Silverline Tools Guarantee:

Hand tools are guaranteed forever other tools are guaranteed for 3 years unless stated. This simply means all hand tools are guaranteed to be free of defects caused by faulty materials or workmanship from now until the end of time. Naturally, fair wear and tear is not covered so do not expect blades to stay sharp forever.

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