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ECOBRA   RIETZ   Models 1510 & 1511
( 25 cm Scales )
Model 1511 made of Aluminum Alloy ...



ECOBRA, Nuernberg / Germany                             (1955/60)
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S A L E S  of  the  ALL  METAL    R I E T Z    Models 1510 & 1511
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Front Side         [ inverse / RED ]                    Back Side
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                                           ( 0 ...  25 cm Ruler )
K        X3
A        X2
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B        X2                                    S        sin(0.1X)
[CI]     [1/X]
C        X                                     T        tan(0.1X)
-----------------------------------------------------------------
D        X
L        lgX 
                                              ( 0 ... 10" Ruler )
R E M A R K S :
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Both models came in a dark-red cardboard case.   The SRs are made
of aluminum.  Model  1511  was oxidized and powdery  on the edges
and  the slider was locked. For the restoration it had to be dis-
assembled, oxidized layers scratched away and  VASELINE  applied.

Model  1511
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has a surface of  white enamel. Scales  & figures are printed and
burned into.  One body part is screwed into the ends.

Model  1510
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has a "plain" aluminum surface. Scales & figures are engraved and
colored.  Both body parts are rivited into the ends ...

 

                                       ... it looks like a  REISS
Historical Remarks ...

impressum:
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© C.HAMANN   http://public.beuth-hochschule.de/~hamann   06/11/11