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THALES »KA« ADDING MACHINE
NEWER VERSION
Have a look at the OLDER VERSION...
W*D*H = 9_3/4" * 8_1/4" * 3_1/2" Weight (ca.) = 4_2/3 lbs = 2.1 kg
= 25 cm * 21 cm * 9 cm SN = 42787
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T H A L E S - W E R K Rastatt / Baden Germany (1960)
Historical Remarks ...
The NEW VERION has a PLASTIC COVER ( Old = Metall ), a LEFT LEVER to
clear the Arithmetic Unit ( Old = Wheel ), MAIN LEVER on right side
( Old = left/right choice ) and NO COUNTER.
HOW TO A D D & S U B T R A C T with this THALES »KA«
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Pushing down the left RED LEVER clears the ARITHMETIC UNIT. Pressing
the big SILVER KEY clears the INPUT UNIT. The right LEVER ON TOP
should be switched backward by default. The LEVER right beside the
keyboard should be switched foreward to [+] by default.
When an INPUT-KEY, ( eg. [7] ) is pressed, the whole column below
[6] ... [1] switches too! Under the KEYBOARD this column forms a
BAR with ( eg. 7 ) TEETH. Pressing the right MAIN LEVER down, let
the arithmetic unit SLIDE UNDER THE KEYBOARD to add the input value
to the content of the arithmetic unit - Releasing the main lever let
the arithmetic unit slide back to front and shows the actual content
in its DISPLAY WINDOWS - The input unit will be cleared.
For REPEATED INPUT VALUES, the LEVER ON TOP has to be set to [R] -
the keyboard will not be cleared after operation. For SUBTRACTION
the LEVER RIGHT BESIDE THE KEYBOARD has to be set to [-] before the
MAIN LEVER is pulled down.
R E M A R K S T O R E S T O R A T I O N :
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The RUBBER FEET have lost their elasticity and its metal posts have
touched the floor. Because all are fixed with rivets, the "Scratch-
Problem" was solved by LEATHER PATCHES glued under ...
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.. The PLASTIC COVER had CRACKS around the SCREW-HOLES. To prevent
further damage, a SUPPORT out of CATFOOD-CAN was glued underneath.