WW1 British military artillery director No5 Mk 1. Comes with ( extra lens  has broken glass )

A very rare and well preserved World War 1 era (1914-18) Director No 5 Mark 1 brass artillery director theodolite gun sight, (reference no.5 mk1) .  These were originally issued to British military forward advance for the setting the elevation and angle of heavy artillery during World War 1.

Please see all the pictures as it part of the description and for more details