( ARISTO-Werke )  Dennert & Pape, Hamburg / Germany      (1927)
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S C A L E S  of  the   DENNERT & PAPE   MANNHEIM    Model D2.28
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Front Side                                            Back Side
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( 0 ...  25 cm Ruler )

A      X2
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B      X2                          S      sin(0.1X); sin(0.01X)
                                   L      lgX
C      X                           T      tan(0.1X)
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D      X

( 0 ...  28 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 old model is made of mahogany with scales on celluloid
veneer.  The engravement  »27«  in the bottom means  "1927"
On its back side is a table with physical & engineer constants.
Screws on the side allow adjustment of the slider's friction.

                    Historical Remarks ...
impressum:
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© C.HAMANN     http://public.BHT-Berlin.de/hamann      10/04/10