An opisometer, also called a curvimeter, meilograph, or map measurer, 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.

The meaning of OPISOMETER is an instrument used for measuring curved lines (as on a map) and consisting essentially of a screw with a wheel-shaped nut that is made to rotate forward along the curved lines and then backward to its original position on the screw along a straight scale.

2022年7月9日 · Elliott Brothers included their “Opisometer, or Map Meter, for measuring curved lines” on page four of their eleven page 1868 priced catalogue. Each instrument then cost three shillings. Despite being a simple instrument, they have to be carefully made to maintain accuracy.

2020年2月15日 · An opisometer is a curious instrument. As soon as you handle one it is pretty obvious how it works. A handle, in this case made of bone, probably from a cow, with a small milled wheel that turns easily on a supported fine thread. There is also a small metal pointer to aid in locating whatever it is you are measuring.

An opisometer, also called a curvimeter, meilograph, or map measurer, 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.

2024年12月13日 · Using an opisometer to ‘trace’ a coastline or a railway line transformed the map to something beyond a diagram; instead it was a passage to a different world from that of the classroom. For the explorers as well as surveyors in the nineteenth as well as early twentieth century the opisometer was inalienable.

An opisometer, also called a curvimeter, meilograph, or map measurer, 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.

An opisometer, also called a curvimeter, meilograph or map measurer, 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.

opisometer，英语单词，主要用作名词，作名词时译为“曲线计；距离测定器”。

An opisometer, also called a curvimeter, meilograph, or map measurer, is an instrument for measuring the length s 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.