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.BHT-Berlin.de/hamann 10/10/10
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