previous <<==>> next

TRISO - RIETZ   ( 25 cm Scales )




TRISO / TOVARNA-MERIL / Slovenijales                     (2004)
***************************************************************

S C A L E S   of  the    T R I S O     » RIETZ «     Model 6502
===============================================================
Front Side            [ inverse / RED ]               Back Side
===============================================================
( 0 ...  27 cm Ruler )

K        X3
A        X2
---------------------------------------------------------------
B        X2                                S         sin(0.1X)
[CI]     [1/X]                             ST        arc(0.01X)
C        X                                 T         tan(0.1X)
---------------------------------------------------------------
D        X
L        lgX

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

According to the HISTORY of the company TRISO ( founded 1904)
- as the diagram on the back side shows - this slide rule was
made after 2004 under the company name TOVARNA MERIL ...

                 Historical Remarks ...
impressum:
***************************************************************
© C.HAMANN  http://public.beuth-hochschule.de/~hamann  08/10/09