Quick Answer: The Vernier Caliper is a chrome-plated hardened carbon steel caliper measuring 0–150 mm / 0–6 inches, with a least count of 0.1 mm and jaws for outside, inside, depth and step readings.
Last updated: October 2026
Key Features
Outside, inside, depth and step measurement
Dual mm/inch scales with laser-etched vernier markings
Least count 0.1 mm (metric), 1/128 inch (imperial)
Thumb-operated fine adjustment and spring-lock movable jaw
Hardened carbon steel with non-glossy chrome plating
Technical Specifications
Specification
Value
Material
Hardened carbon steel, non-glossy chrome plating
Measuring range
0–150 mm / 0–6 inches
Least count
0.1 mm (metric) / 1/128 inch (imperial)
Scales
Dual mm/inch, laser-etched vernier
Adjustment
Thumb-operated fine adjustment, spring-lock movable jaw
Functions
Outside, inside, depth, step
HS code
9017.30
About This Product
Students use the caliper to measure outer and inner diameters, the depth of holes and steps, and to learn how a vernier scale resolves fractions of a millimetre by matching lines. It supports physics practicals and engineering graphics work where sizes feed into volume and tolerance calculations.
Frequently Asked Questions
What can the Vernier Caliper measure?
It takes outside, inside, depth and step measurements over 0–150 mm (0–6 inches).
What is its least count?
0.1 mm on the metric scale and 1/128 inch on the imperial scale.
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