English, c.1918, engraved DIRECTOR No5 MKI, E R WATTS & CO 1918 No.4799' and engraved with the military arrow, finished in black lacquer and polished brass, in original mahogany case with instructions to inside of lid, with second eyepiece, case width 45cm

Note: the Director was originally issued to the British military for the setting the elevation and angle of heavy artillery during World War I