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small wooden box with three plastic terminals, one big black switch and a screen with a scale from 0 to 0.5 amperes. One connecting screw on each end and a plaque with NEUTRALISING UNIT REF NO IOA/8475

The Newsletter for the University of Aberdeen from 1982 until 1985 in an A4 paper box.

Circular holder containing 2 glass plates showing Newton's rings. 3 adjustable brass screws. Badly corroded on top, slight fracture on glass near one screw.

Printed circuit board with 28 nixie tubes, each tube for displaying one of the digits 0-9.
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