Spurtar 6 inch / 150 mm Vernier Caliper
A 150 mm manual caliper measures outside, inside, depth and step dimensions with 0.02 mm metric and .001 inch imperial accuracy
- High accuracy to ±.001" and ±.02 mm for precise work
- Measures OD, ID, depth and step in one tool
- Dual inch and millimetre scales remove conversion errors
- Smooth slide and fixed thumb rest enable one-hand operation
- Includes ruler, cloth, case and instructions for immediate use
Precision measuring for workshop and lab
The Spurtar 6 inch / 150 mm Vernier Caliper is a hardened manual gauge built for machinists, engineers, hobbyists and DIY users who need reliable outside diameter, inside diameter, depth and step readings in metal, wood or plastic. Imperial accuracy is 0.001 inch and metric accuracy is 0.02 mm across the 0-150 mm range. No batteries or electronics are required.
All-mechanical operation means silent, cool running
The tool has no motor, fan or power draw, so it adds zero noise or heat to a bench. A smooth slide and fixed thumb rest allow one-handed use without grittiness, and the hardened construction maintains the stated tolerances over repeated cycles. No external power supply or cooling is ever needed.
Boxed kit adds a ruler, cloth.
The package includes a steel ruler, cleaning cloth, fitted storage case and instruction sheet. A back sticker lists inch and metric screw-thread standards for quick thread identification. These extras protect the jaws, keep the scales clean and let users verify threads without a separate chart.
Highlights
- High accuracy to ±.001" and ±.02 mm for precise work
- Measures OD, ID, depth and step in one tool
- Dual inch and millimetre scales remove conversion errors
- Smooth slide and fixed thumb rest enable one-hand operation
- Includes ruler, cloth, case and instructions for immediate use
Specifications
No published specifications for this item yet.
Questions about this item
How do I zero the 150 mm vernier caliper before taking measurements, and what step do users often miss?
Close the jaws fully, check that the zero lines on the main and vernier scales align exactly, then loosen the lock screw if they do not; the step many miss is forgetting to re-tighten the lock screw after zeroing.
What maintenance will the hardened steel caliper need over time?
Wipe the scales and sliding surfaces with the supplied cleaning cloth after each use, apply a light machine oil to the slide occasionally, and store it in the provided case to prevent corrosion.
At what point does the ±0.02 mm metric tolerance become the limiting factor during repeated measurements?
The stated tolerance of ±0.025 mm per 300 mm means cumulative error grows with each full-range cycle, so the limit appears first when stacking multiple 150 mm readings end-to-end.
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