Parallel Rulers for Charts
$63.52
(02205D)
(02205D) 450mm Parallel Ruler with correct marine markings
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Full acrylic parallel ruler with solid brass (not brass plated steel) pins plus stainless steel straps (non magnetic).
The compass degree markings on one edge and mm measurements markings on the other.
In use, the parallel ruler is laid on the course line of your chart and then prallel walked across to the nearest compass rose on your chart