Brass Prismatic Compass in Leather Case

A pre WWI example of a type of British military compass called a 'Verner's pattern' after its designer's name, Colonel William Willoughby Cole Verner.
It has a brass case, Mother of Pearl dial (to enhance reading in low level light), and a gemstone pivot bearing. To protect the dial when not in use it has a transit lock that is activated during lid closure. In use it can be sited on to a point in the distance and the bearing from North read off the compass dial through a prismatic lens. The underside of the brass case is engraved with the year 1911, the maker (ER Watts & Son). The top is engraved with the broad arrow; the British ordnance mark. The compass comes in its leather carry case with original initials R.T.T.

Dimensions of compass: length 7.25 cm/2⅞ inches x diameter 5.25 cm/2⅛ inches x 2 cm/¾ inch.