parallel ruler

British  

noun

1. engineering a drawing instrument in which two parallel edges are connected so that they remain parallel, although the distance between them can be varied

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Example Sentences

The exercises were growing more complex and difficult: navigation by leg dividers and a parallel ruler; docking in 30 mph wind; sailing around an entire island; trying to rescue Mick’s hat, which blew overboard.

From Washington Post • Sep. 6, 2017

“Nor’-nor’-west,” echoed Maxwell, seizing his parallel ruler and applying it to the chart.

From A Middy of the King A Romance of the Old British Navy by Hodgson, Edward S.

Foster unrolled the large chart of the North Atlantic Ocean upon the dinner table, and with parallel ruler, pencil, and compasses, proceeded to perform his duty.

From Outward Bound Or, Young America Afloat by Optic, Oliver

I measured off a distance of four miles with the dividers, and marked it off above the mouth of the creek; then applied the parallel ruler and found the course.

From The Congo Rovers A Story of the Slave Squadron by Schonberg, J.

A chart lay folded on a table in the centre of the cabin, with a pair of dividers and a parallel ruler lying on it.

From A Tall Ship On Other Naval Occasions by Bartimeus