Plotting
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Bi-Rola Rule
$36.00
The most exciting new plotter we've seen! A friend of ours reports he was taking a Coast Guard navigation exam with 22 other people. A few of the applicants had the bi-rola rule. According to our friend, they "really burned up" the plotting portion, and finished long before the others. It is constructed of heavy duty plastic with brass rollers, and is practically indestructible. The plotter moves up and down like a normal rolling plotter. By tilting it though, it can be moved sideways without disturbing its orientation. This allows a course line to be moved anywhere on the chart's surface with ease. A swing radial arm has 3 loran interpolator scales, and when used in conjunction with the body, serves as a large divider for measuring long distances. The arm also allows courses to easily be measured in true or magnetic. The roller body itself has protractor markings, and a nautical mile scale. Dimensions are: Length 13-7/8 in., Width 2-5/8 in., Thickness 1 in. Weight is 12 oz. The unit comes packaged in a durable, vinyl protective pouch. We strongly recommend this plotter.
Chart Kit Plotter
$89.99
This affordable and portable navigation system is designed for accurate navigating with any chart, chartkit or chartbook. The plotter is made of solid wood and an integrated adjustable parallel arm fitted with a moveable compass rose. This permits the direct plotting of magnetic compass courses and firmly supports your chart work whether in the cockpit, on deck or below. Plot a course to a given point by locking the rule at a given bearing. By moving the rule so that the point is on an edge, you quickly determine the correct line of position on a chart for that bearing. A see-through acrylic sheet overlays and protects the chart as you plot and allows for notations using a dry erase marker.
Chartkit Plotter
Wt: 1 lb. 10 oz.
Dimensions: 22-5/8" x 20-3/16"
Charting Kit
$34.00
An economical selection of navigation tools. Includes: one-arm protractor, course plotter, protractor triangle, parallel rules, dividers, and pencil. All are organized in a heavy duty vinyl case with instructions.
GPS Plotter
$49.99
A straightforward and effective interface between a GPS and a paper chart. It enables the latitude and longitude obtained from a GPS to be quickly, easily and accurately plotted on a paper chart in a simple two-step maneuver. It does this with its innovative straight-line action and its special pencil guide holes. The instrument also features protractor markings so that it can also serve as a conventional-style plotting device and parallel rule. Designed and manufactured in England, the GPS Plotter is made in a sturdy, clear acrylic for maximum chart visibility and in one size to cover all chart sizes. It also has an innovative slip and grip feature that helps improve accuracy. Weight: 9.8 oz.
Graduated Parallel Rules
$19.50
Divided with protractor markings (double reading) and compass points. The rules are machined from .155 inch acrylic sheet for accuracy and strength. The legs are beveled on all 4 edges, and the metal parts are made from brass. Friction pads on the undersides prevent slipping. Length: 15 inches. Denmark.
(Linex #A1715M, List $25.25)
Maneuvering Board
$6.95
For decades, the maneuvering board chart has been a mainstay for solving relative motion problems. The bearing and distance marks from the center, and the convenient scales at the sides allow quick and easy plotting of course and speed vectors, and the addition of them to provide course and speed to to rendezvous, (or the necessary changes to avoid collision). It is almost indespensable if you want to fire a torpedoe and expect to get a hit. This is an exact copy of the government DMA 5090 Maneuvering Board. Pad of 50 sheets.
Maneuvering Board Manual Government Publication #217
$13.50
Government Pub #217 tells how to solve all the problems.
123 Pages.
One Hand Dividers
These most traditional of dividers are imported from England. Although they are made of brass, the points are of stainless steel to retain sharpness after prolonged use. The design is such that they can be easily opened and closed with one hand, and are resistant to rolling off a heeled navigation table. They are supplied in a vinyl case, (List $30.99, $31.99)
P-72 Course Plotter
$5.95
This is a 4 x 15 inch transparent protractor plotter which is very popular with boaters, and the U.S. Power Squadrons. It is printed in two colors, and laminated for protection. The orientation of the protractor makes it particularly easy for plotting celestial lines of position. The edges are calibrated in both statute and nautical miles for chart scales of 1:40,000, and 1:80,000.
(C-Thru model P-72)
Portland Course Plotter
$19.50
Previously known as the Breton Plotter, which was an English language version of a popular French small boat navigation plotter. It was originally designed for use be the fishermen of Brittany. Today, it is made by Blundel Harling in England. The movable compass rose grid is aligned on the chart parallels, and automatically sets the drawing edges on the course bearing required. Variation can be pre-set on the movable rose for ease in plotting compass bearings. The edges are graduated in inches and centimeters. The large, easy to read numbers make the plotter easy to use under difficult conditions.
Rolling Parallel Plotters Weems and Plath
$14.25
Do parallel plotting in half the space! This plotter mounted on a roller lets you plot courses and parallel lines by simple direct transfer without the space required of traditional parallel rules or triangles. As additional help, the plotter has distance scales at 1:20,000, 1:40,000, and 1:80,000 to fit NOS coast and harbor charts. The two rollers keep the plotter parallel as you move it across the chart. A semi-circular protractor lets you plot courses against a meridian if desired. The plotter in 13 inches long. A smaller compact version is constructed in essentially the same way, and is well suited for plotting in more confined spaces. Scales are 1:20,000 and 1:40,000 on an 8 inch long plotter. (Plath #120/#060).
Triple Parallel Rules
$12.95
Twice the reach of regular parallel rules plus they go in any direction (left, right and straight) so you can go directly to the compass rose. There is also less chance for slippage. The rules are 12 inches long.
Ultra-light Dividers
$11.50
The most popular dividers today. They look like the older models that are adjusted by turning the wheel between the legs to attain a new setting. You can do that with these too, but the legs themselves can be adjusted by a light, direct pressure on them. The wheel reacts by turning itself. Either of the two points may be replaced by a pencil lead to create a compass, and a supply of such leads is included. We recommend these dividers over any others in this catalog. Length 7 inches, weight 3 oz. (Linex #76BD)
Universal Plotting Sheets (VP-OS)
$4.95
These are also known as VP-OS sheets. A graduated circle printed at the center allows meridians of longitude to be constructed for any latitude, thus creating a custom-made chart for any geographical position.