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Clocks: composite pendulum, side and front view with details. Engraving by Mutlow.

Clocks: diagrams of water-clocks. Engraving, c. 1861.

Clocks: jigs for spring-coiling (top), and cog-placing (below). Engraving by Lachaussé after L.J. Goussier.

Clocks: details of a dividing engine for setting out gearwheels. Engraving by Prevost [after G. d'Heuland].

Clocks: a chronometer, face (top) and mechanism (below). Engraving by Benard after L.J. Goussier.

Clocks: various pocket watches, and details of their mechanisms. Engraving c.1861.

Clocks: an escapement mechanism. Engraving by W. Kelsall after J. Clement.

Clocks: a large carved stone gnomon, dated 1714, on Lord Reay's estate at Tongue. Lithograph after a drawing by C. G. Loch.

Clocks: faces (top), and mechanisms (below) of a Ferguson (right), and a Smeaton-Franklin clock (left). Coloured engraving by J. Pass, 1809.

Civil engineering: diagrams for setting-out a sundial. Engraving by J. Pass, 1809.

Clocks: a chronometer mechanism for striking the hours. Engraving by Defehrt after L.J. Goussier.

Clocks: spring driven clock mechanism. Engraving by Prevost after G. d'Heuland.

Clocks: a device for balancing cogs. Engraving by Prevost after Bourgeois.

Clocks: diagrams for setting-out a sundial. Engraving by A. Bell.

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Civil engineering: diagrams for setting-out a sundial. Engraving by J. Pass, 1809.

Clocks: a chronometer mechanism for striking the hours. Engraving by Defehrt after L.J. Goussier.

Clocks: spring driven clock mechanism. Engraving by Prevost after G. d'Heuland.

Clocks: a device for balancing cogs. Engraving by Prevost after Bourgeois.

Clocks: diagrams for setting-out a sundial. Engraving by A. Bell.