The primary purpose of the ParaLock Plotter is to enable the transfer of
GPS positions rapidly, easily, and accurately to and from any paper
chart. This unique plotter features three unique design concepts: 1)
The black locking knob is friction adjustable for fast lat/long
transfers. It enables the two rulers to be fixed in any given
separation, which allows rapid determination of GPS position. 2) Two
sets of finger holes enable finger tips to act as friction pads on the
underlying chart and inform the navigator if the rule has slipped while
plotting. 3) The ParaLock Plotter is only 7.25 inches (18.42cm) long, as
opposed to the standard rule length of 15 inches (38.1cm), but its
opening width is the same as standard rules.
Tags: Weems Plotter Paralock, WAP000090, Navigation