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Opisometer

Opisometer

Product Code : JA-M-7888

The Opisometer (SKU JA-M-7888) is a simple instrument for measuring the length of curved lines, such as a route on a map, the outline of a diagram or a curved path drawn in a practical. It consists of a knurled wheel that runs on a transversely mounted threaded spindle, so the position of the wheel along the spindle records how far it has been rolled. This opisometer for measuring curved lines is manufactured in India by JaincoLab for school and college laboratories.

Specifications

The opisometer consists of a knurled wheel running on a transversely mounted threaded spindle and is used to measure the length of curved lines.

ProductOpisometer
SKUJA-M-7888
TypeOpisometer (curvimeter)
MechanismKnurled wheel running on a transversely mounted threaded spindle
FunctionMeasuring the length of curved lines

How the opisometer for measuring curved lines is used

To use the opisometer, the wheel is first run to one end of its spindle, rolled along the curved line from start to finish, and then rolled back along a straight scale until it returns to its starting end; the distance covered on the scale is the length of the curve.

  • Measuring curved paths and outlines in length-measurement lessons
  • Finding the length of a route or river on a map and converting it with the map scale
  • Measuring the circumference of circular or irregular drawings
  • Checking the length of curved graph lines in practical records
  • Geography and physics activities that link measurement with scale drawings

Scope of supply and ordering

Each unit is one opisometer with its knurled wheel and threaded spindle. Accessories, spares and quantities are confirmed on the quotation.

Minimum order quantity, packing and lead time are confirmed on the quotation for the number of pieces and the delivery destination. JaincoLab supplies classroom quantities for individual schools and bulk orders for colleges, education programmes and export buyers in Africa, the Middle East and South and South-East Asia.

Frequently asked questions

What is an opisometer used for?
It is used for measuring the length of curved lines, for example a route on a map or the outline of a drawing.

How does it work?
A knurled wheel runs on a transversely mounted threaded spindle. The wheel is rolled along the curve and then rolled back along a straight scale to its starting point to read the length.

Is a scale needed with it?
Yes. The measured distance is read by rolling the wheel back along a ruler or a map scale.

Related products

Browse the full Measurement range or the complete catalogue from JaincoLab, a physics lab equipment manufacturer in India.

Request a quote

To order the Opisometer, send the quantity and delivery destination through the JaincoLab contact page or email [email protected]. For tender or project supply, see our tenders page.

Last updated: September 2026

   
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Office Address

Jain Scientific Suppliers
2475-84, Hargolal Road,
Ambala Cantt, Haryana, India

[email protected]

+91-85699-09696

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