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NESTLER   Model  14   ( 25 cm Scales )






Albert Nestler, Lahr in Baden / Germany                    (1912)
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                                                      VERSION (B)

S C A L E S   of  the   N E S T L E R    » RIETZ «     Model 14/1
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Front Side            [ inverse / RED ]                 Back Side
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( 0 ...  28 cm Ruler )

   A        X2
-----------------------------------------------------------------
   B        X2                     S     sin(0.01X); sin(0.1X)
   [CI]     [1/X]                  L     lgX
   C        X                      T     tan(0.1X)
-----------------------------------------------------------------
   D        X

( 0 ...  29 cm Ruler )

R E M A R K S :                        (  1° = 60' ;   1' = 60" )
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The TRIGONOMETRIC SCALES  are divided in  MINUTES(') & SECONDS(")

S keyed to A/B ;  T keyed to C/D

This historic wooden  » Model 14 «  has  a reciprocal scale  1/X.
On its back side is a table with physical constants. It came in a
black cardboard case:  The "/1" on the CASE refers to  1 HAIRLINE
on the cursor.

There is a VERSION (A) in the collection:
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This slide rule is  smaller & shorter, has  NO "Extended Scales",
and has  NO 1/X SCALE  - but it came with a  3 HAIRLINE CURSOR in
a black cardboard case.

    

Historical Remarks ...

impressum:
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© C.HAMANN   http://public.beuth-hochschule.de/~hamann   05/31/11