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Military ruler| dragos |
Posted: July 05, 2014 05:30 pm
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 Admin  Group: Admin Posts: 2397 Member No.: 2 Joined: February 11, 2003  |
I have a WW2 military ruler that seems to have some aerial bomb marks on it. Can someone explain what was it use?
On one side it is written: "Bomba germana 12 kg", on the other: "Grenada I.A.R. - Barbieri". There are curved gradations from 180 to 350 intersected by straight lines marked 3, 5, 10, 15, 20, 25, 30. http://i.imgur.com/GlNn2e0.jpg |
  
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| Hadrian |
Posted: July 10, 2014 09:08 pm
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 Sergent major  Group: Members Posts: 245 Member No.: 875 Joined: April 09, 2006 |
It looks to be some kind of slide rule for use in load calculations for interwar romanian aircrafts, maybe SET 7 or so.
This post has been edited by Hadrian on July 10, 2014 09:24 pm |
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| Radub |
Posted: July 14, 2014 09:01 am
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 General de corp de armata  Group: Members Posts: 1670 Member No.: 476 Joined: January 23, 2005 |
It may be the ruler from the AMA bomb sight used with the Barbieri bomb carriers. This sight was used on Potez 25 and I.A.R.37/38/39.
You can fing more information about the principle here: http://en.wikipedia.org/wiki/Drift_Sight HTH Radu |
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| Ferdinand |
Posted: July 24, 2014 06:43 pm
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 Maior  Group: Members Posts: 721 Member No.: 1486 Joined: June 28, 2007 |
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