Bi-Rola Ruler 350m
Rolling Plotter Our Very Best!
The bi-rola rule represents Weems & Plath's efforts to provide the very best plotting tools.
Constructed of heavy duty plastic with brass rollers, the bi-rola rule is built to withstand years of trouble free use.
The bi-rola rule's patented vertical and horizontal rolling motion simplifies course and plotting calculations, while the unique radial arm allows you to automatically include compass corrections in your course plotting.
All together, the bi-rola rule is the most completely self-contained plotting device in its class.
Full operating instructions included. 350mm L x 70mm W.