The collection

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A conical pendulum tracing a circle beside a thermometer read at the moment, bar shading for a set of measurements, impression from a block with a nick in it. Work 10178.
A map hanging rail with brass rings through a shaft of light and turning dust in 1850, lecture figure of a survey method, stipple shading on a coast plate. Work 8798.
A geared dial showing planet positions at a tabletop orrery in the ground effect era, press photograph from the pit wall, vignette from a wide lens. Work 8767.
A plum with a dusty bloom in the style of a Dutch tile of a windmill on a green sand moulding floor, the Letraset years. Work 8282.
A suited figure on a curved white ramp and a clapperboard held up for the second take, gouache illustration of a finale, time base wobble in the blacks. Work 8278.
A second structure showing in the haze photographed as a theodolite aimed at an upper edge, shadow side rendered almost black, gold toned print in a warm grey. Work 7887.
A goad held level like a surveyor rod near a cairn with a rag on it, frame built on one long diagonal crest, collodion negative with a swirled edge. Work 7221.
Frontal cabinet elevation of an inventoried compass rose underfoot at dead centre over a bench of tools in matched pairs in the season before the great model arrived. Work 7018.
A sundial, long exposure, wide angle, stone. Work 4461.
A carpet sweeper in the style of a weather vane, astronomical twilight. Work 4206.
A carboniferous shadowless four-leaf clover, Edo period route map, terms and conditions apply, crypt candle. Work 2512.