[OC] That grey thing in the middle is a MK1A Ford Range keeper. 100% analog mechanical ballistics computer for naval guns. The US Navy used these from the early '40's until the mid 90's.
![[OC] That grey thing in the middle is a MK1A Ford Range keeper. 100% analog mechanical ballistics computer for naval guns. The US Navy used these from the early '40's until the mid 90's.](https://lemmy.world/pictrs/image/5084ce9c-198a-4aff-8dc1-8c709109f1eb.jpeg){kind=link}
This particular unit weighed 3150LBS, was built in Feb 1946, took 7 people to operate and all data was input by hand cranks. Photo credit OP, Gunnery Plotting Room USS Brumby FF-1044 mid 1980’s.
