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Farnell NOR modules in ABDNP:201911a

Farnell OR module in ABDNP:201911a

For determining the angle of tilt from the vertical of the local magnetic field. Brass dip quadrant calibrated at 2 degree intervals from 0 (at bottom) to 84 degrees on circular brass base with embeeded lead weight. Pivoted lozenge-shaped needle…

Black cardboard box with a direct drive dial inside wrapped in polythene and tissue paper. Direct drive dial is a large grey metal disc with a scale round the outside from 0 to 190 and a black plastic knob on top. Included in the box is a dispatch…

Hand sized brass spectroscope with small button to shut aperture. For looking through to see spectrum of sky, mainly to judge water absorption levels

Hand held brass spectroscope with variable aperture and variable focus. Can see the prism inside it. Engraving on barrel.

Brass direct vision spectroscope with clamp for a stand and variable focus. Part of set of miniature optical instruments.

This pamphlet provides instructions on how to conduct an election under the rules of the 1831 Reform Act for Scotland. On the first page, note how the directions state that the Sheriff should 'proclaim (read aloud) the writ at the market cross'.…

Telephone directory for Aberdeen - Yellow Pages.