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Douglas Navigational Protractor 5" - D565 rechargeable GT20-TM transducer

SKU 76935715754
4.0
Description

GT20-TM transducer

which allows you to toggle between the navigation display and backup display modes at the press of a button

Turbo (1000 lumens) - 30 second intervals* / 130 meters

aera 6xx Series

the collapsible 1

Douglas Navigational Protractor 5" - D565 rechargeable GT20-TM transducerCalled "navigational" primarily because it goes continuously from 0 to 360 as a compass rose does. Use for plotting lines of position in celestial navigation or for general plotting and vector problems on plain paper that does not have a compass rose. In England and Australia it is more commonly called a Douglas Protractor, where they are popular for general plotting.

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