previous <<==>> next
DIETZGEN 1732 ( 10" / 25 cm Scales )
EUGEN DIETZGEN CO., Chicago, Illinois / USA SN = 506525 (1945) ************************************************************************* S C A L E S of the » MANIPHASE MULTIPLEX « Model 1732 ========================================================================= Front Side [ inverse / RED ] Back Side ========================================================================= L lgX [LL0] [exp(-0.001X) .. exp(-0.01X) .. exp(-0.1X)] LL1 exp(0.01X) [LL00] [exp(-0.1X) .. exp(-1X) .. exp(-10X)] DF πX A X2 ------------------------------------------------------------------------- CF πX B X2 [CIF] [1/πX] T tan(0.1X) ; [cot(0.1X)] [CI] [1/X] ST arc(0.01X) C X S sin(0.1X) ; [cos(0.1X)] ------------------------------------------------------------------------- D X D X LL3 exp(X) [DI] [1/X] LL2 exp(0.1X) K X3 R E M A R K S : ========================================================================= [LL0] & [LL00] are keyed to A ( !!! ) ; LL1, LL2 & LL3 are keyed to D This » DECIMAL TRIG TYPE LOG LOG SLIDE RULE « is made of mahogany with scales on celluloid veneer. The sturdy cardboard case is covered with black artificial leather, but the lid is made of real leather. The case can be clipped on the user's belt - typical for the USA: As seen in "Western Movies" ready for a "quick draw". This "DIETZGEN" is made by KEUFFEL & ESSER. The SCALES are identical to K&E Model 4081-3 ( Version A ) but this CURSOR is a "DIETZGEN"-Patent ( Glasses are easy to break because its grooves !) ... It came with detoriated CELLULOID CURSOR-BLOCKS and broken SPRING ... |
... Both had to be replaced by home-made ones.
Same "CELLULOID DISEASE" happened also to the