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Nautical Charts and More - TSD Calculators

 

 

 

Chart Tube | Compasses/Compass Kits | Dividers | Navigation Kits | Parallel Rulers | Protractor/Plotters |

Ships Curves | T-S-D Calculators | Vinyl Waterproof Chart Cases

 


BN30 TIME-SPEED-DISTANCE RULER

 

7" x 1" Clear Plastic.
All you need is a pair of dividers and this ruler to calculate
time, speed or distance when 2 of the 3 variables are known.
Instructions included.
usually ships within 24 hours

 

BN30

$2.95

Quantity


NATO PATTERN TSD SLIDE RULE
BN102 - 300mm
BN111 - 200mm

A simple device for calculating the third quantity given the other 
two (i.e. distance covered, given speed and elapsed time).

 

BN102  300mm

$39.95

Quantity

BN111  200mm

$29.95

Quantity

 

BN27 TIME-SPEED-DISTANCE CALCULATOR (Wheel)
 
6" x 7".
Printed in blue on plastic and laminated to ensure permanent 
calibrations. Calculate time, speed or distance when 2 of the 3
variables are known.
Also offers nautical miles vs. statute miles scale.

BN27

$13.95

Quantity