Center Gauge
Product Code : LSK-MMTM-10604
Center Gauge (SKU LSK-MMTM-10604), also called a centre gauge or fishtail gauge, is a flat steel gauge for grinding and setting screw-cutting tools and for finding the number of threads per inch. Lathe instructors and trainees in ITI, polytechnic and TVET machining workshops use it at the screw-cutting stage. Science Lab Supplies offers it from its base in Ambala, India, to institutes, colleges, contractors and distributors alongside other lathe accessories.
Specifications
Graduations, material and finish of the center gauge are set out row by row below. In short, it is cut from spring-tempered steel with a satin chrome finish, and its edges carry etched scales in 14ths, 20ths, 24ths and 32nds of an inch for counting threads per inch, while its profile is used to grind and set screw-cutting tools.
| Specification | Value |
|---|---|
| SKU | LSK-MMTM-10604 |
| Also known as | Centre gauge, fishtail gauge |
| Material | Spring-tempered steel |
| Finish | Satin chrome |
| Graduation method | Etched |
| Etched graduations | 14ths, 20ths, 24ths and 32nds of an inch |
| Measurement graduations | 1/24 in and 1/32 in |
| Tool use | Grinding and setting screw-cutting tools |
| Thread scale | For finding the number of threads per inch |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Center Gauge
On a lathe the gauge is held against the work so the threading tool can be set square before a thread is cut, and at the grinder it is used to check the tool point while it is being shaped. The inch scales let trainees count threads per inch on an existing screw.
- ITI Turner and Machinist trades: setting the threading tool before screw-cutting practice on a Center Lathe Machine.
- Tool-grinding exercises: checking the point of a single-point threading tool shaped on a Bench Grinder.
- Diploma and B.Tech workshop practice: introducing threads per inch and thread-cutting setup.
- TVET machining modules: squaring a Threading Tool Holder to the work before the first pass.
Standard Scope of Supply
The Center Gauge is supplied as a single gauge as described above, ready to use with its etched graduations. Lathes, threading tools and thread gauges are quoted separately, and any optional accessories you request are listed on the quotation.
Packing, MOQ and Lead Time
A quotation can cover one gauge or a set for every lathe in a turning shop. It states the packing, delivery time and price for the number you ask for, and other ITI trade tools such as thread gauges and tool holders can be listed alongside.
Science Lab Supplies holds an Importer-Exporter Code and, as a registered exporter, can ship to buyers in Nigeria, Kenya, Ghana, Ethiopia, Tanzania and Uganda. Science Lab Supplies is registered for GST (GSTIN 06ADEPJ0574F2ZU). To price gauges for a turning shop, message the sales desk through the contact page, tick them into the enquiry cart, or consult the lab tender page for tender procedure.
Frequently Asked Questions
What is a center gauge used for?
It is used when grinding a screw-cutting tool and when setting that tool square to the work on a lathe. Its graduated edges also help to find the number of threads per inch.
What graduations does this gauge have?
The edges carry etched graduations in 14ths, 20ths, 24ths and 32nds of an inch, including 1/24 and 1/32 inch measurement scales for checking thread pitch on inch-series screws.
Who supplies the Center Gauge?
Science Lab Supplies handles supply of this gauge from Ambala, India. It can be quoted on its own or with lathe tooling for ITI, polytechnic and TVET workshops, and for contractors and distributors buying against tenders.
Will the gauge rust in a workshop?
It is made of spring-tempered steel with a satin chrome finish. Wiping off cutting fluid and storing it dry after each session keeps the etched markings readable.
Related Screw-Cutting and Tool-Grinding Equipment
The center gauge belongs to the screw-cutting and tool-grinding stations of a lathe workshop. These items cover the other lathe tool holders, a grinder for shaping cutting tools, eye protection for that work and gauges for checking the result, so both stations can be equipped and quoted together.
- Thread Gauge — corrosion-resistant gauge offered in different specifications to match the threads you cut.
- Boring Bars with Holder — seven bar sizes from 3/8 to 1-3/16 in diameter, supplied without tool bits.
- Parting Tool Holder — fits the front or rear tool post and takes blades from 1/2 x 3/32 in to 3/4 x 1/8 in.
- Knurling Tool Holder — two-knurl tool normally fitted with medium knurls; a self-adjusting pivot-head version is also offered.
- Universal Tool and Cutter Grinder — 500 mm between centres and a wheel head that tilts 15 degrees either way.
- Grinding Goggles — clear goggles that protect against flying particles during turning and grinding.
- Feeler Gauge — high-grade stainless steel blades with an anti-rust finish; the gauge weighs about 125 g.
Browse the full Metal Manufacturing Training Machine range, the Workshop Tools range for bench grinders, or all TVET lab equipment.
Last updated: 9 October 2026
