Serial-Number  =  670409

ADDIATOR, Berlin / Germany  (1967)

B o d y   S i z e    ( W * D * H )    =   60 mm * 232 mm * 4 mm

ADDITION / SUBTRACTION;  2-COMPLEMENT;
Overflow/Underflow = RED MARKS with ARROWS;
On its back side is a  CONVERSION TABLE Hexa-to-Decimal

The »HEXADAT« came with LEATHER CASE & STYLUS (w.pen) inside,
incl. HEX-CONVERSION-TABLE & INSTRUCTION all in a cardboard box.

Have a look at a HEXADAT ADVERTISEMENT & INSTRUCTION ( in German )

R E M A R K S  T O   R E S T O R A T I O N :
=======================================================
The »HEXADAT« had to be opened because  B L O C K E D   R E S E T ...



... Sharp edges had to be filed, harden fat spots removed, VASELINE applied:
OBSERVE THE DIFFERENT SLIDER (= "2-COMPLEMENT") IN THE RIGHT POSITION ...

... SEE: How to convert DECIMAL-to-DUAL-to-HEXA / 2-COMPLEMENT ...

impressum:
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© C.HAMANN       http://public.BHT-Berlin.de/hamann        07/09/16