Definition of parallel ruler in English:

parallel ruler

noun

  • An instrument for drawing parallel lines, consisting of two or more rulers connected by jointed crosspieces so as to be always parallel, at whatever distance they are set.

    • ‘A parallel ruler was used to transfer angular bearings from prominent coastal features in georeferenced SAR images of various scales to the same features on outline maps.’
    • ‘This folding parallel ruler provides a fast, accurate method of drawing lines parallel to any reference line.’

Pronunciation

parallel ruler