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ADDI - 7



The broken LEVER CAPS are replaced by colored insulator pipes
The broken FEET are replaced by small plastic ones, glued under

W*D*H = 5" * 5_1/2" * 6"            Weight (ca.) =  4_3/4 lbs = 2.2 kg
      = 13 cm * 14 cm * 15 cm                             SN  =  13076
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LIPSIA Rechenmaschinen Fabrik, Leipzig  / (GDR) Germany         (1935)

Later a modified  » ADDI-7 «  was produced by  TRIUMPHATOR  as  » KA «

                   Historical Remarks ...

HOW  TO   A D D   &   S U B T R A C T   with  this   » ADDI-7 «  ADDER
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Press the FRONT BAR to RESET INPUT LEVERS to ZERO.  With the CRANK the
REGISTER ( = DISPLAY ) will be cleared to ZERO.  ADDITION is performed
by pulling the INPUT LEVERS down until the NUMBER to be added is shown
in the INPUT WINDOWs.  The INPUT FIGURES are added to the content of
the REGISTER ( = DISPLAY ).

Push the FRONT BAR to RESET the INPUT LEVERS to ZERO -  & CONTINUE ...

SUBTRACTION is a PROCEDURE:
(1st) Push down & hold the RED KEY ( - ) and
(2nd) Pull the INPUT LEVERS down  until the NUMBER to be subtracted
      is shown in the INPUT WINDOWs.
(3rd) Release the RED KEY ( - ).
(4th) PUSH the INPUT LEVERS BACK to ZERO by HAND
(5th) The REGISTER ( = DISPLAY ) shows the actual sum.

impressum:
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© C.HAMANN     http://public.beuth-hochschule.de/~hamann     10/10/10