Navigational aid

Details Navigational aid Navigational aid

1980-09-24

1982-11-16

Hix, L. T.

Registers

Calculators

Input-output calculator to indicator, printer, etc.

235 78N, 33431, G06G 108

Patent

active

043596282

ABSTRACT:
A navigational aid device comprising three concentrically mounted relatively moveable scales and at least one centrally mounted rotatable arm defining a moveable radial line intersecting the scales and their axis of rotation, at least the central portion of the device being transparent or cut-away so that when placed on a map the map location appearing on the axis is visible to an operator using the device.

REFERENCES:
patent: 3721007 (1973-03-01), Banner
patent: 3844042 (1974-10-01), Hodge
patent: 3855706 (1974-12-01), Price

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