This is a Fuze Setter for use with variable time fuzes of the the 10cm Kanone series. It is specificly marked to the 10cm K. 04 and K. 14 but because these guns had common fuze and projectile combinations with the later 10cm Kanone 1917 this Fuze Setter’s use should also include this late war gun.
All images, research, and text are sole property of Ralph Lovett.