Rangefinders identification help!

[Tony Kearns]

Evening all!
Can anyone help identify all the equipment in the two picture attached. I notice an Air Corps collar badge and can any one date it?
Many thanks
Tony K

[GoneToTheCanner]

Hi Tony,
I think they are related to the 3.4 (or 3.7) inch anti-aircraft guns. I have seen a clearer photo of same and it's a Barr and Stroud coincidence or stereoscopic rangefinder, essentially used for manual rangefinding in the absence of radar-plotting.The other device, I think, is a mechanical plotting device, which was fed the estimated speed and elevation / altitude of the target, as estimated by the rangefinder operator and that information was used to drive a mechanical fuse setter which theoretically allowed the crew to fire a shell to burst at the correct altitude.
regards
GttC

[Tony Kearns]

Thanks GttC, my, that was quick. Looking at the uniforms am I correct in thinking that it was post Emergency. The location does not appear to be Baldonnel and I don't recognise it as being Gormansburgh either.
Thanks again, you are a bloody mine of information!
Tony K

[GoneToTheCanner]

I don't know about the date.Does anyone know when the 3.7s went out of service? Given the wide-open spaces, possibly the Curragh or the Phoenix Park?
regards
GttC

[Goldie fish]

Could be Rineanna.

[DeV]

There are pictures of these in use during the Emergency, it could be Phoenix Park either.

[Tony Kearns]

Thanks all for the help, don't think it is Rineanna Goldie too much trees in the background.
There could be stakes in the background (to prevent aircraft landing) and with the trees it is possible it is the Phoenix Park as DeV suggests
Tony K

[Sargents 3]

sweet

Thanks again one of you was right it was a range finder and a Predictor a Mechanical computer
Is was in the ordnance school for years
I remember escorting lectures from Bolton st to see it
I wonder were it is now
The 3.7 were due to go to the n s but some ass in the department had them (all but 1 on the square in the arty depot) cut up in Hammond lane that had to be 1970s
they had the live ammo in the magazine in the curragh till it was dumped

The ordnance depot in Clancy had many fine pieces ??

[techie]

ahem, The ordnance school