Final approach timer

Claim 1

An aircraft instrument approach timer that comprises, in combination a count-down clock device which counts down from 5 minutes to zero on a 120* scale, with a hand/pointer which moves clockwise so that the tip of the hand/pointer moves from an up position towards a down position along an arc on the left side of which is scribed/printed the time scale with the 5 near the top, the 4 to the right and below the 5, and the 3 to the right and below the 4, etc, down the iNside of the arc to the zero, with lines running beside the numbers to the arc and other lines between these lines to indicate fractions of minutes, and on the outside of said arc is a movable altitude scale being scribed on a flat narrow arcuate insert and being held next to the time scale by being encased in an arcuate tunnel slot, and said altitude scale being adjustable by manually sliding within said slot and being stopped in said slot at a desired position so that a chose altitude number can be placed adjacent to a chosen time creating a relationship of the scales so that the pointer/clock hand when operating will indicate a lessening of time and a lowering of altitude or at any instant, the time remaining and the programmed altitude; and also, the said altitude scale may be manually removed from said slot and another altitude scale inserted into said slot allowing each of a set of altitude scales to be used, said other altitude scales in the set being scaled each to a different rate of feet per minute.