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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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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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

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 J. Schonberg

By this process the parallel ruler could be moved all over the chart without losing the course from one point to the other.

From Outward Bound Or, Young America Afloat by Oliver Optic

Mr. Spokesly laid the parallel ruler against the line and produced it clear across the chart.

From Command by William McFee

But reach down your chart, and produce your parallel ruler and dividers, my hearty; I want to get some sort of notion of what is ahead of us.”

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

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