Micrometer Screw Gauge
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Product Code : SCL-PLE-11646
Quick Answer: The Micrometer Screw Gauge measures the outside dimensions of small objects from 0 to 25 mm, using a screw with a half-millimetre pitch. A ratchet stop gives the same measuring force every time.
Last updated: October 2026
Key Features
- Range 0 to 25 mm with a least count of 0.01 mm
- Screw pitch 0.5 mm
- Hardened stainless steel spindle and anvil with ground faces
- Satin-chrome sleeve and thimble with laser-etched graduations
- Constant-force ratchet stop
- Lever-type or knurled-nut spindle lock
Technical Specifications
| Specification | Value |
|---|---|
| Measurement range | 0 to 25 mm |
| Least count | 0.01 mm |
| Screw pitch | 0.5 mm |
| Frame | Powder-coated cast iron or forged steel |
| Spindle and anvil | Hardened stainless steel, ground faces |
| Sleeve and thimble | Satin-chrome, laser-etched graduations |
| Ratchet | Constant-force ratchet stop |
| Lock | Lever-type or knurled nut |
About This Product
Students use the gauge to find the diameter of wires, ball bearings and glass beads, or the thickness of sheet and paper, and from those values work out cross-sectional area or density. Learning to combine the sleeve and thimble readings, and to check zero error, is a standard part of practical physics. The Micrometer Screw Gauge can be supplied on export terms to Sri Lanka, Burundi, Djibouti, Comoros, Mauritius and Qatar.
Frequently Asked Questions
What is the least count of the Micrometer Screw Gauge?
The least count is 0.01 mm: the screw pitch is 0.5 mm and the thimble graduations divide each turn.
Why does the micrometer have a ratchet stop?
The ratchet applies a constant force when closing on the object, so readings are repeatable and the object is not squeezed.
Related: Physics Lab Equipment, Micrometer Screw Gauge Digital and Micrometer Screw Gauge for Engineering.
For a quotation on the Micrometer Screw Gauge, contact Educational Instrument.
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