Instrument	:	Station Pointer (Protractor)
Manufacturer	:	Warren Knight Co
Country of origin	:	U.S.A.
Manufacturing year	:	1942

I've obtained this instrument in 1996. It is also referred to as a 'Protractor'. The instrument is used for coastal navigation using a sextant. One could measure the two angles between three coastal objects. After setting the legs of the station pointer to the right angles (adjustment is done with two verniers) it can be laid on a map showing the same objects. With the legs running over the objects on the map the center of the instrument will be your position in the map.

This protractor has Serial Number 7700, and was manufactured in 1942. Warren-Knight made hundreds of them during WWII. The number 70 on the back of the instrument (according to one of the instrument makers over there for almost 60 years) is probably the number of the instrument from the "Lot" or group of instruments made at one time. The number stamped on the back would help the instrument makers keep track of what parts went with which instrument as they were being made as the parts were all hand fitted due to the accuracy that had to be achieved for these instruments [RM].

This model protractor is still produced by Warren-Knight as Model #24-1175L. The mirrored version (able to close the right hand legs) is manufactured as Model #24-1175R.

[RM]: Rick Marron, Warren-Knight Instrument Company, Philadelphia, USA.