Definitions
1.NounA table by means of which the difference of latitude and departure corresponding to any given course and distance may be found by inspection. It contains the lengths of the two sides of a right-angled triangle, usually for every quarter of a degree of angle, and for lengths of the hypotenuse, from 1 to 100.
2.NounA platform with one or more tracks, and arranged to move laterally on wheels, for shifting cars, etc., from one line of track to another.