T E C H N I C A L   D A T A   of the  Mechanical Calculator  H A M A N N
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                                                      MANUS  » MODEL-D «
Serial Numbers:      8400 / 6229

Dimensions:   (ca.)  Width   =  10 1/4" /  26 cm
                     Depth   =   6    " /  15 cm
                     Height  =   6 1/4" /  16 cm

Weight:       (ca.)  13 lbs  /  6 kg

Mechanics:           Switching-Latch-Wheel / Schalt-Klinke

Functions:           Add, Subtract, Multiply, Divide
                     Division-Automatic!

Registers:           Input       =   9 Decimals
                     Counter     =   8 Decimals
                     Arithmetic  =  13 Decimals
Manufacturer:
                     DTW  ==>>  DeTeWe
                     Deutsche Telephon Werke AG
                     Berlin / Germany
                     1930/35
Assembler:
                     C.Hamann
                     T F H
                     Berlin / Germany
                     2008

R E M A R K S :                                    PROOF TO BE RIGHT ???
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The actual "WINDOW" of known »MODEL-D« SNs is ( Oct.2009 )  8197 .. 8231 

With my Model »E«, I have narrowed the range of SNs left for  »MODEL-D«.
The collector community is chasing »MODEL-D« but, it could be a phantom.
Only  o n e  picture ( without naming the source ) was available in

    http://www.rechenmaschinen-illustrated.com ...

    

... JUST FOR FUN  I have combined the carriage of my  »C«  with the body
of my  »E«  to create a   »D«  -   In fact, there are only minor changes
necessary to make the  »MODEL-D«  working ...

(1.) A HOLE in the »E«-Base  102 mm x 59 mm  from the right front corner

           

     to allow CLEARING the arithmetic unit in the left-most position of
     the carriage  ( The HOLE allows a PIN to come down )  -  AND ...

(2.) a HOOK (of brass) mounted on the »C«-Carriage to hold the SPRING.

           

And the RESULT:  A  G E N U I N E   » C . H A M A N N 2  MANUS MODEL-D «

Demonstration:  2. BERLIN-BRANDENBURGER SAMMLER-TREFFEN (BBST) in Berlin
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© C.HAMANN     http://public.BHT-Berlin.de/hamann    impressum    11/08/08