LEYBOURN (WILLIAM): Dialing ... shewing how to make such dials, and to adorn them with all useful furniture, London, for Awnsham Churchill, 1682, sm. folio, first edition, engraved portrait and 23 plates (lower blank margin of portrait cropped, light soiling), contemporary calf, rebacked (rubbed) [Wing L1912] -- Ferguson (James): Lectures on Select Subjects in Mechanics ... with the Use of Globes, the Art of Dialling, London, for A. Millar, 1760, 8vo, first edition, 23 engraved plates, some folding (some browning to title, occasional light soiling), contemporary sprinkled calf (head of spine slightly chipped); and another on dialling, by Edward Wells. (3)