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Screw Gauge
Screw Gauge (Product Code: SCL211/05) is a micrometer screw gauge used to measure small outside dimensions, such as the diameter of a wire or the thickness of a sheet, in physics practicals. It covers 0–25 mm with a precision of 0.01 mm, using an accurately machined stainless steel rod in a nickel-plated brass frame with a ratchet top and lock. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Measuring range | 0–25 mm (outside measurements up to 25 mm) |
| Precision | 0.01 mm (1/100 mm) |
| Measuring rod | Accurately machined stainless steel |
| Frame | Nickel-plated brass |
| Ratchet | Ratchet top |
| Lock | Lock type |
| Packing | Supplied in a plastic case |
| Product code | SCL211/05 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Screw Gauge Used For?
School and college students use the screw gauge to find the diameter of a resistance wire before calculating its resistivity, the thickness of a metal or glass sheet, and the diameter of a small ball. The object is placed between the fixed stud and the moving rod, and the reading is taken from the main scale plus the circular scale on the thimble.
Good practice: close the gauge with the ratchet until it slips rather than turning the thimble directly, check and record any zero error before starting, lock the rod before lifting the gauge to read it, and take readings at several points along a wire. As a screw gauge for school physics labs, it pairs naturally with a vernier calliper for larger objects.
OEM Manufacturer
ScienceLab is the trading name of Jain Scientific Equipments Private Limited, the OEM (original equipment manufacturer) of this Screw Gauge. It is made at the company's own licensed factory at Saha, Ambala, Haryana, India, and packed in its plastic case there before dispatch to schools, colleges, dealers and importers.
Buying from the maker means one point of contact for bulk quantities, repeat orders and questions about replacement cases or parts — just ask us. See the company profile for more about ScienceLab.
Related Physics Lab Equipment
Apparatus and materials that are measured or used with the screw gauge:
- Vernier Calliper — for larger outside, inside and depth measurements.
- Constantan Wire — resistance wire whose diameter is needed for resistivity work.
- Steel Wire — wire sample for diameter readings.
- Metal/Steel Sheet (Rectangular) — a sheet for thickness measurement practice.
- Steel Ball — a small sphere whose diameter can be measured.
Browse the Physics Lab category for other measuring instruments.
Frequently Asked Questions
What is the range and precision of the Screw Gauge?
The Screw Gauge measures outside dimensions from 0 to 25 mm with a precision of 0.01 mm (1/100 mm). That makes it suitable for wire diameters, sheet thicknesses and small spheres in school and college practicals.
What is the Screw Gauge made of?
The Screw Gauge has a nickel-plated brass frame with a ratchet top and an accurately machined stainless steel measuring rod. It is a lock type gauge, so the reading can be held while the gauge is removed from the object.
How do I check the zero error of the Screw Gauge?
To check the Screw Gauge for zero error, close it gently using the ratchet with nothing between the faces. If the circular-scale zero does not line up with the reference line, note how many divisions it is above or below and correct every reading.
Does the Screw Gauge come with a case?
Yes. The Screw Gauge is supplied in a plastic case, which protects the measuring faces and ratchet between lessons. Wipe the gauge clean and return it to the case after each use to keep dust off the thread.
Who manufactures the Screw Gauge?
The Screw Gauge (SCL211/05) is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own factory at Saha, Ambala, Haryana, India. Schools, dealers and importers receive quotations directly from the manufacturer.
Is a calibration certificate available for the Screw Gauge?
Calibration-certificate availability for the Screw Gauge should be discussed with ScienceLab before ordering. Mention the requirement when you send your enquiry through https://scilabexport.com/contact so the team can confirm what can be provided with the quotation.
Request a Quote
Send the quantity of Screw Gauges you need through the contact page, or add the item to the enquiry cart. Quotations are issued directly by the manufacturer in Ambala.
Last updated: 24 September 2026
