proportional compass वाक्य

उदाहरण वाक्य

1. A "'proportional compass "', also known as a military compass or sector, was an instrument used for calculation from the end of the sixteenth century until the nineteenth century.
2. The "'sector "', also known as a "'proportional compass "'or "'military compass "', was a major calculating instrument in use from the end of the sixteenth century until the nineteenth century.