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Military ruler

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dragos	Posted: July 05, 2014 05:30 pm
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

Hadrian	Posted: July 10, 2014 09:08 pm
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

Radub	Posted: July 14, 2014 09:01 am
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

Ferdinand	Posted: July 24, 2014 06:43 pm
Maior Group: Members Posts: 720 Member No.: 1486 Joined: June 28, 2007	Similar to this one,also explanations, here: http://sliderulemuseum.com/Military.htm :)

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