The instrument in that photo would appear to be an artillery Aiming Circle (Director in Royal Artillery terms), being a US one it will be graduated in Mils.
It looks to be an M2-series Aiming Circle on an M24 Tripod, and the operator needs a head-slap for having his hand on the tripod while taking a bearing...
I find it odd that an Aiming Circle should be used for plotting bomb bursts although the caption doesn't actually say that; the field of view is too small. Now, if they are actually plotting the location of the Target especially one that has moved it makes more sense.
It is missing the one vital piece of equipment - the cup/mug!
It is odd that in 1946 the Air Ministry were looking at automatic quadrants to save on manpower and improve accuracy, yet hear we are today and they are still using the same system (the equipment, comms and probably the odd computer excepted) as pre-war days.
No Amount Of Evidence Will Ever Persuade An Idiot (probably not Mark Twain)
The automatic strike recorder for air to ground strikes was in use by 1950 (no idea where at the moment) so it seems probable that an automatic system for plotting bomb strikes would have been in use by now. Maybe it was too expensive a nut to crack?
No Amount Of Evidence Will Ever Persuade An Idiot (probably not Mark Twain)
The Americans were using something called TOSS, Tactical Ordnance Scoring System on some ranges, I have seen some pictures on the DODimage site, will see if I can find them again
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