LAWRENCE ENGINEERING SERVICE, Peru, Indiana / USA   (1943)
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S C A L E S   of  the    L A W R E N C E      Model »10-B«
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                                     ( one-sided only )
   A         X2
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   B         X2
   CI        1/X
   C         X
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   D         X
   K         X3

R E M A R K S :
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This common historic slide rule is made out of solid wood.
The surface is painted white with black printed scales. On
the back side are conversion tables and mathem. constants.
( Move the mouse over its cursor to see <Pop-Up>DETAILS !)
It has a Magnifying-CURSOR. The slide rule came in a black
cardboard box with a bow as a birthday present ...  AND AS
PART OF THE BOOK ...

                    Historical Remarks ...
impressum:
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© C.HAMANN   http://public.BHT-Berlin.de/hamann   09/10/07