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Brass artillery computer-predictor-calculator, Swiss-made

C

cannonmn

Active Member
Item is bout 12 x 6 inches, mostly brass, has about a dozen moving parts. I want to know the proper name, who may have used it, when, for what purpose. Made by Buchi Optik of Bern, Switzerland, apparently ca. 1930. The important marks on the moving arms are in English, so maybe made for US or UK? Arms labeled Base, Line of Observer, Line of Fire. Any info appreciated.

Main photos (site says photos too large to post as such so here are links for now, sry)

https://springfieldarsenal.files.wordpress.com/2016/01/img_1624.jpg

https://springfieldarsenal.files.wordpress.com/2016/01/img_1613.jpg

https://springfieldarsenal.files.wordpress.com/2016/01/img_1612.jpg

https://springfieldarsenal.files.wordpress.com/2016/01/img_1611.jpg

Other photos:


https://springfieldarsenal.files.wordpress.com/2016/01/img_1615.jpg

https://springfieldarsenal.files.wordpress.com/2016/01/img_1616.jpg

https://springfieldarsenal.files.wordpress.com/2016/01/img_1617.jpg

https://springfieldarsenal.files.wordpress.com/2016/01/img_1618.jpg

https://springfieldarsenal.files.wordpress.com/2016/01/img_1619.jpg

https://springfieldarsenal.files.wordpress.com/2016/01/img_1627.jpg
 
Last edited:
(QUOTE=butterfly;270207]cant help you out with the exact name of the piece you have but I have seen a number of plotting instruments to do with artillery and torpedo and it reminds me a little of both....
here are a couple of links to similar items, I will keep looking....Kev

http://www.hmshood.com/ship/fire_control.htm

http://www.lovettartillery.com/Field Artillery Fire Direction Plotters.html

http://www.cerberus.com.au/director.html[/QUOTE]


Thanks, I just found another thread where I'd asked same question in 2008, which has a lot of responses on my device and others. Can't believe I totally forgot it!

http://forum.axishistory.com/viewtopic.php?f=70&t=29159&start=15
 
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