Gauge Block

Product Code : EL-MAILE-10844

Gauge Block (code EL-MAILE-10844) is an 81 piece set of rectangular steel gauge blocks, also known as gage blocks, Johansson gauges, slip gauges or Jo blocks, used to produce precision lengths for measurement and inspection. The blocks are Grade 0, made from high-carbon, high-chrome steel, and each carries an etched identification number and its nominal length in inches in laser-etched black characters.

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Specifications

What Is the Gauge Block Used For?

Gauge blocks are wrung together, slid into contact so that their lapped faces cling to each other, to make up a stack of a required length from a small number of blocks. The stack then serves as a length standard: to set micrometers, height gauges and dial indicators, to check other gauges, or to raise one roller of a sine bar when setting an angle. An 81 piece inch set allows a wide range of lengths to be combined. Blocks are handled with clean hands or gloves, wiped before wringing and returned to their case to protect the faces.

What to Specify When Ordering

• Quantity — the number of gauge block sets required.

Frequently Asked Questions

What other names are used for gauge blocks?
They are also known as gage blocks, Johansson gauges, slip gauges or Jo blocks. Each is a block ground and lapped to a specific thickness.

How many blocks are in the set and what grade are they?
The set contains 81 rectangular blocks of Grade 0, with their nominal lengths given in inches.

What steel are the blocks made from?
They are made from high-carbon, high-chrome steel, which gives the measuring faces high hardness and wear resistance.

How is each block identified?
Each block has an identification number etched into it, and its nominal length in inches is marked in laser-etched black characters.

What does wringing mean?
Wringing is sliding two clean, lapped blocks together so that they cling to each other, allowing several blocks to be combined into a stack of the length needed.

What are gauge blocks used for?
They act as length standards: stacks are used to set and check micrometers, height gauges and dial indicators, and to set angles with a sine bar.

OEM Manufacturer

Buyers of the Gauge Block deal directly with its maker, Engineering Lab Equipment (Engineering Labs Equipment Pvt Ltd), whose works are at Plot No. 43, Industrial Park, Sector 2, Growth Center, Saha, District Ambala, Haryana, India. The company designs, makes and tests measuring instruments and instrumentation trainers for engineering laboratories, supplies engineering colleges, polytechnics, technical training institutes and research laboratories in India and overseas, and builds to institution-specific requirements on request. Tender details are on the Tenders/OEM page.

Related Measuring Instruments

• Go / No Go Gauges — 7 piece H6 metric thread plug gauge set, M3 to M12, double-end GO and NO GO, wooden case.
• Taper Gauge — pocket-size stainless steel gauge for hole sizes and bores, reading in thousandths of an inch.
• Dial Bore Gauge — set of three dial-indicating gauges for 10 to 150 mm bores, carbide-tipped anvils, wooden case.

See the full Measurement and Instrumentation Lab Equipment range or all Mechanical Engineering Lab Equipment.

Request a Quote

For this and other measurement and instrumentation lab equipment, schools and colleges can contact Engineering Lab Equipment, a manufacturer, supplier and exporter based in Ambala, India. Quotations are given on request: send the number of 81 piece gauge block sets required and your delivery location through the contact page, or add the Gauge Block to the enquiry cart from this page.

Last updated: October 2026