Spring Caliper External

Product Code : EL-MAILE-10847

Spring Caliper External (code EL-MAILE-10847) is an outside caliper whose legs curve inward at the points, used to measure outside dimensions by transferring the external size of an object. It is Style A-4 with a 0-4 in range and 4 in length, and has a flexible yet strong bow spring, centrally located spring-type solid nut adjustment, flat stock steel legs and a hardened fulcrum stud, weighing 2.61 ounces.

Get a quote: use the Add To Cart enquiry button below, or send your quantity and delivery location through the contact page.

Specifications

What Is the Spring Caliper External Used For?

Outside spring calipers are a simple transfer tool for diameters and thicknesses that are awkward to reach with a rule. The operator turns the central nut until the curved tips just touch both sides of the work with a light, even feel, withdraws the caliper without disturbing the setting and measures the distance between the tips with a steel rule. The bow spring keeps the legs pressed against the nut, so the set size stays fixed while it is checked, and the 0-4 in style suits small turned parts and bar stock in workshops and training labs.

What to Specify When Ordering

• Quantity — the number of external spring calipers required.

Frequently Asked Questions

What does an external spring caliper measure?
It measures outside dimensions. Its inward-curving tips are set across the outside of an object, and the size is then transferred to a rule for reading.

What range and style is this caliper?
It is Style A-4, with a range of 0-4 in and a length of 4 in, and it weighs 2.61 ounces.

How is the caliper adjusted?
A centrally located spring-type solid nut opens and closes the legs against a flexible yet strong bow spring, so the setting is held once it is made.

What materials are used?
The caliper is made from steel, with legs of flat stock and a hardened fulcrum stud on which the legs pivot.

How is the size read off the caliper?
After the tips are set across the work, the caliper is withdrawn and the distance between its tips is measured with a steel rule.

OEM Manufacturer

Buyers of the Spring Caliper External deal directly with its maker, Engineering Lab Equipment (Engineering Labs Equipment Pvt Ltd), whose works are at Plot No. 43, Industrial Park, Sector 2, Growth Center, Saha, District Ambala, Haryana, India. The company designs, makes and tests measuring instruments and instrumentation trainers for engineering laboratories, supplies engineering colleges, polytechnics, technical training institutes and research laboratories in India and overseas, and builds to institution-specific requirements on request. Tender details are on the Tenders/OEM page.

Related Measuring Instruments

• Internal Spring Caliper — inside caliper in Style A-4 for 0-4 in bores, with outward-turned legs and satin chrome finish.
• Dial Type Vernier Caliper — dial-reading caliper for OD, ID, depth and steps, 0.02 mm or 0.001 in, fitted case.
• Dial Type Micrometer — 0-1 in indicating screw gauge with retractable anvil, carbide faces and IP54 protection.

See the full Measurement and Instrumentation Lab Equipment range or all Mechanical Engineering Lab Equipment.

Request a Quote

For this and other measurement and instrumentation lab equipment, schools and colleges can contact Engineering Lab Equipment, a manufacturer, supplier and exporter based in Ambala, India. Quotations are given on request: send the number of external spring calipers required and your delivery location through the contact page, or add the Spring Caliper External to the enquiry cart from this page.

Last updated: October 2026