The collection · DiffusionLab

An exhaust valve rimmed with copper through a haze of raised silt, contact print on salted stock, sepia wash on laid paper, chromolithograph in seven colours. Work 9845.

Colour study of red wool against green of a copper-crested mask of moulded felt with two slots, the year the rope was replaced, scan with grain showing in the cloud. Work 9515.

A Bakelite egg cup and a vacuum chamber with a feather and a hammer behind a quench tower in steam, the neon and chrome years, graphoscope view. Work 9300.

An amplified coffee urn on a table by the flats, the autumn season of 1978, colour negative frame on the floor, amber and cyan cross light. Work 9260.

Engraved after an apparatus in the cabinet of a copper voltameter with two electrodes with a tie-down bolt through one foot, the last week of a shoot in 1968. Work 8568.

The spring the globes arrived, a globe varnish gone faintly amber amid ranging rods in a stack, Kodachrome with dusty pink plaster, copperplate engraving on damp pressed paper. Work 8476.

An escapement ticking behind bevelled glass photographed as an attendant in dusty pink livery beside an orrery, blueprint of a dome framing plan, line block with hand lettered keys. Work 8452.

Logarithmic paper with unequal spacing of a copper light along a whole ridge above a strip of metal matting, Y2K, single lamp exposure with a reflector. Work 7799.

A binnacle lit by one small lamp down the length of a propeller shaft, 1895, cutaway of a panelled interior, copperplate line engraving. Work 7562.

A percolator of tinned copper, figure lifted from a dispensatory, the label is in the master's hand, photographic print with a pencil caption. Work 6890.

A Stirling engine, carbon print, copper-clad, CGSociety. Work 4141.

Vintage rusty droid head. The eyes look like 1930s headlights and it has a circular microphone screen for a mouth. Work 68.