Map Measurer
Product Code : EL-MAILE-10855
Quick Answer: A Map Measurer, or opisometer – also called a curvimeter or meilograph – is an instrument for measuring the lengths of arbitrary curved lines, most commonly used to measure the lengths of roads, rivers, and other line features on maps. It consists of a toothed wheel of known circumference on a handle; running the wheel along a curved line and counting the teeth that pass a mark on the handle gives the line length (line length = wheel circumference × teeth counted/teeth on wheel), with scales reading the measured distance in kilometers and miles. This mechanical, double-sided, water proof map measure also adds and subtracts distance, has a smart wheel setting for quick and easy set up, and a reset dial that also measures the number of revolutions; side one measures 1 metre per revolution, while side two offers scales of 1:25, 1:50, 1:75, and 1:100.
A map measurer, or opisometer – also called a curvimeter or meilograph – is an instrument for measuring the lengths of arbitrary curved lines. A simple opisometer consists of a toothed wheel of known circumference on a handle. The wheel is placed in contact with the curved line to be measured and run along its length, and by counting the number of teeth passing a mark on the handle while this is done, the length of the line can be ascertained.
Line length = wheel circumference × teeth counted/teeth on wheel.
Opisometer designed for this purpose provide scales reading the measured distance in kilometers and miles. The instrument is most commonly used to measure the lengths of roads, rivers and other line features on maps.
FEATURES:
Adds and subtracts distance – flexible measurement
Water proof – for use in all weather conditions
Smart wheel setting – quick and easy set up
SPECIFICATION:
Mechanical Map Measure
Double Sided
Reset Dial Also Measures Number of Revolutions
Side One Measures 1 Metre per Revolution
Scales on Side Two Include 1:25, 1:50, 1:75, 1:100
Contact Engineering Lab Equipment for your School, College Civil and Mechanical Engineering Lab Instruments. We are the best and renowned chemical engineering lab instruments supplier, chemical engineering lab equipment supplier, engineering lab instruments exporter, civil engineering lab equipment exporter, civil engineering lab instruments supplier, civil engineering lab equipments manufacturer in Ambala, India.
Last Updated: September 2026
Related Products: Digital Planimeter, Metric Metal Ruler, Fiber Glass Measuring Tape
