細節
Three calculators:
The Adal ('The Brain Saver'), of pressed aluminium with spiral-grooved revolving disc, with instructions, in plush-lined case -- 8¼in. (21cm.) wide; a Fowler's Magnum long scale, with single revolving dial and cursor, in chromium-plated case with instruction leaflet and leather wallet -- 5in. (12.5cm.) wide; and a Fuller Calculator, with straight scales and bakelite ends (bakelite chipped, outer scale discoloured) (3)
The Adal ('The Brain Saver'), of pressed aluminium with spiral-grooved revolving disc, with instructions, in plush-lined case -- 8¼in. (21cm.) wide; a Fowler's Magnum long scale, with single revolving dial and cursor, in chromium-plated case with instruction leaflet and leather wallet -- 5in. (12.5cm.) wide; and a Fuller Calculator, with straight scales and bakelite ends (bakelite chipped, outer scale discoloured) (3)