Quick Answer: Vernier Micrometer Screw Gauge is a mechanical screw gauge for measuring wire diameter, sheet thickness and other small external dimensions more finely than a caliper, read from its main and circular scales.
Last updated: October 2026
Key Features
Measures small external diameters, wire thickness and sheet thickness
Mechanical reading from main scale and circular scale
No batteries or electronic display
Teaches pitch, least count and zero-error correction
Technical Specifications
Specification
Value
Measurement function
Small external diameter, wire thickness, sheet thickness and small-length measurement
Least count / resolution
0.01 mm
Reading system
Mechanical main scale and circular scale
About This Product
The object is held lightly between spindle and anvil while the thimble is turned, using the ratchet stop if fitted so that soft specimens are not crushed, and the combined main and circular scale reading is corrected for zero error. Physics and Applied Mechanics students turn to it when caliper readings are too coarse, for example for the diameter of wires or the thickness of sheets.
Frequently Asked Questions
Q1. How is a micrometer screw gauge different from a vernier caliper? A vernier caliper covers broader external, internal and depth measurements, while a micrometer screw gauge is used mainly for finer external diameter and thickness readings.
Q2. Does the Vernier Micrometer Screw Gauge need batteries? No. It works with a screw, sleeve scale and thimble scale and is read by hand.
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