Sine Bar
Product Code : EL-MAILE-10851
Sine Bar (code EL-MAILE-10851) is an angle measuring and setting tool made of a hardened, precision ground body with two precision ground cylinders fixed at its ends, its top surface parallel to the line through the cylinder centres. It is used with gauge blocks and a dial gauge or spirit level, comes in 100, 150, 208, 250 and 300 mm sizes, and has a hardness of 60 ±2 hr, working face accuracy of 0.00003 in per inch and parallelism of 0.0004 in.
Get a quote: use the Add To Cart enquiry button below, or send your quantity and delivery location through the contact page.
Specifications
| Parameter | Detail |
|---|---|
| Construction | Hardened, precision ground body with two precision ground cylinders fixed at the ends |
| Top surface | Parallel to a line through the centres of the two rollers |
| Range | 100 mm, 150 mm, 208 mm, 250 mm and 300 mm |
| Hardness | 60 ±2 hr |
| Working face accuracy | 0.00003 in per inch |
| Roll centre distance accuracy | 0.0002 in |
| Parallelism | 0.0004 in |
| End flange | Flange on the end for resting the work piece |
| Applications | Inspection, angle checking and taper checking |
| Angle set-up | Using the sine bar with 1-2-3 blocks or gauge blocks |
| Product code | EL-MAILE-10851 |
| Manufacturer | Engineering Lab Equipment, Ambala, Haryana, India |
What Is the Sine Bar Used For?
The sine bar sets or measures an angle by trigonometry. To check a wedge, the wedge lies on a horizontal table, the bar is placed on its sloping face, and gauge blocks are used until a dial gauge or spirit level shows that the top of the bar is horizontal. The sine of the angle is then the height of the gauge blocks divided by the distance between the cylinder centres. Used the other way round, a stack of 1-2-3 blocks or gauge blocks under one cylinder sets the bar to a chosen angle for inspection or taper checking, with the work resting against the end flange.
What to Specify When Ordering
- Quantity — the number of sine bars required.
- Size — 100 mm, 150 mm, 208 mm, 250 mm or 300 mm.
Frequently Asked Questions
Which sizes of sine bar are offered?
The range covers 100 mm, 150 mm, 208 mm, 250 mm and 300 mm sizes, so a bar can be chosen to suit the size of the work and the angles to be set.
How is an angle calculated with a sine bar?
When the top of the bar has been made horizontal over the work, the sine of the angle equals the height of the gauge blocks used divided by the distance between the cylinder centres.
What accessories are used with it?
Gauge blocks or 1-2-3 blocks raise one cylinder, and a dial gauge or spirit level checks that the top surface of the bar is horizontal.
What accuracy figures are given?
Working face accuracy is 0.00003 in per inch, roll centre distance accuracy is 0.0002 in and parallelism is 0.0004 in, with a hardness of 60 ±2 hr.
What is the end flange for?
The flange on the end gives the work piece a surface to rest against while its angle or taper is being checked on the bar.
How can a sine bar be ordered?
Send an enquiry with the Add To Cart button on this page, or use the contact page to give the quantity, the size and your delivery location.
OEM Manufacturer
The Sine Bar is made by Engineering Lab Equipment (Engineering Labs Equipment Pvt Ltd) at its works 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 for engineering colleges, polytechnics, technical training institutes and research laboratories in India and overseas, and can build equipment to an institution's own requirements. Tender and OEM enquiries are handled through the Tenders/OEM page.
Related Measuring Instruments
- Gauge Block — 81 piece Grade 0 set of inch slip gauges in high-carbon, high-chrome steel with laser-etched sizes.
- Surface Plate — hand-scraped cast iron reference plate for inspection and marking out, with Rexine cover.
- Dial Gauge with Magnetic Stand — 0-1 in dial indicator with 0.001 in resolution on a 132 Lbf switchable magnetic base.
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. To ask for a quotation, send the number of sine bars and the sizes required and your delivery location through the contact page, or use the Add To Cart enquiry button on this page.
Last updated: October 2026
