Genuine 70s calculator elka 103

Lovely solid calculator, especially for its age.
Something from the box of stuff I got when my Grandad W died.
He kept the leather effect case and instruction book,which contains some sums,to test the calculators memory.
The memory on this thing is crap,I put some batteries in to test it and it didnt remember a thing about my Grandad,what a swizz.
Grandad Wisbey

Rare Bulgarian calculator,with soviet parts.

Size (approx):
70mm x 135mm x 30mm (max) (w,h,d)

Weight:
122g excluding batteries

Power:
6.0V DC, 4 x AA size batteries. Also accepts an adapter (undefined) through a socket on the top side to the far right. The battery compartment has a green ribbon to aid battery removal.

Case:
Beautiful solid yellow-backed calculator with smooth rear and matt black front piece. Metal panel with black printed text round the switch, in its own recess. Back top of calculator is raised by about 30 degrees and the orangey red display filter raised even more. The lower front edge has the brand and model number printed in white. The keys are squishy, medium travel and work well enough.

Display:
8 digit red LED with bubble lens and ninth digit for negative and memory indicators

Features:
Four functions with percentages, square root and four function memory.

Manufacturer:
Produced by ISOT, exporter: ISOTIMPEX. Made in Bulgaria

Lovely solid calculator, especially for its age.
Something from the box of stuff I got when my Grandad W died.
He kept the leather effect case and instruction book,which contains some sums,to test the calculators memory.
The memory on this thing is crap,I put some batteries in to test it and it didnt remember a thing about my Grandad,what a swizz.
Grandad Wisbey