Screw Gauge and Vernier Caliper
The difference between Screw Gauge and Vernier Caliper is added in the table below,
Difference Between Screw Gauge and Vernier Caliper |
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Feature |
Screw Gauge |
Vernier Caliper |
Measurement Principle |
thickness and diameter are measured via a calibrated screw |
length, diameter, or thickness are measured by sliding a calibrated scale. |
Scale Graduations |
Usually measured in millimeters (mm) or fractions of a millimeter. |
The scale has two main scales (in cm/mm) and a Vernier scale for more accurate readings |
Main Use |
applications for a variety of measurements, including length, diameter, and depth. |
Accurate measurement of small lengths or diameters, frequently utilized in manufacturing and engineering. Used in mechanical and industrial purposes. |
Reading Accuracy |
Higher accuracy due to fine screw thread with least count often in hundredths or thousandths of a millimeter. |
Provides accurate readings with a least count down to 0.02 mm or even finer |
Working Mechanism |
Measuring dimensions by movement of calibrated screw through a spindle and thimble |
It uses two scales, one fixed (main scale) and one movable (Vernier scale) that slide to each other for measurements |
External vs. Internal |
Majorly used for taking external measurements (outer diameter) |
Take readings for both; including external (outer) as well as internal (inner) dimensions with specially shaped jaws |
Usability in Industries |
Majorly in use around precision engineering, labs and manufacturing units |
Widely used across mechanical workshops, automotive, and aerospace industry for varied set of measurements |
Screw Gauge: Definition, Working Principle, Formula
Screw Gauge is an amazing device used for measuring small objects precisely. It is defined as an instrument that is used for measuring very small lengths, i.e. diameter of thin wires, the thickness of small sheets, papers, etc.
In this article, we will learn about Screw Gauge, Its structure, Diagram, Working Principle, errors in screw gauge, its applications, and others in detail.
Table of Content
- What is Screw Gauge?
- Screw Gauge Formula
- Screw Gauge Diagram
- Working Principle
- Errors in Screw Gauge
- Uses of Screw Gauge