|Name and Model Number||Turbocompressor |
Devised by Leib Stern
|Country of Origin||USSR|
|Date of Manufacture||1957|
|Front Scales||C, D, plus many specialized scales|
|Back Scales||Listing of constants and formulas|
|Scale Length||26 cm|
|Type of Rule||Slide Rule|
|Construction||Celluloid on wood. Plastic cursor.|
|Area of Use||Technical|
|Comment||For calculation of characteristics related to turbocompressors and the air flowing in them.
Invented by Leib (Leonid) Stern (1914-1999). Made by the Leningrad measuring instruments factory.
Rule was donated to my collection by the late inventorís daughter.
For more photos and info see http://www.nzeldes.com/HOC/Stern.htm
I havenít heard of another example of this slide rule.
|Donor||Collection of Nathan Zeldes, Israel|
(Click Picture for Details)
|In conjunction with our 'donors' we assign a rarity rating to each item, based on the system devised by Herman van Herwijnen|
|(1929 - 2004), renowned Dutch collector, author, and creator of Herman's Archive, a collection of 5,000 slide rule images on CD.|
|• RR = Rare - 1 of 25 collectors has one; it may take a year to find an example in the marketplace.|
|• RRR = Very Rare - only a few known to collectors; may be several years before it comes up for sale.|
|• RRRR = Extremely Rare - a museum piece; unlikely that an example will come up for sale.|