Photograph of 3" transit instrument, in glazed frame 17 1/4" x 21 1/4". Photograph of 3" transit instrument 1921
Circular instrument dividing engine made by T. Cooke & Sons Ltd, London, England,1908. The cast brass dividing circle (42-inch diameter) with 1,080 teeth is fitted inlaid silver scale on a heavy cast iron table base. Circular instrument dividing engine. 1908
Twenty-two assorted bubble tubes and levels, by T. Cooke & Sons Ltd, c. 1920. One bubble broken. Assorted bubble tubes and levels, 1920 1920-1921
Fishplate profile set, standard, end and side, for BS 60lb flat-bottomed rail, shallow fishplates, NPL No.49843, Crown Agents No.12/60/3, made by T. Cooke & Sons Ltd. for the Engineering Standards Committee, in non-original captioned fitted mahogany case, caption missing Fishplate profile set made by T. Cooke & Sons Ltd
Fishplate profile set, standard, end and side, for BS 45lb flat-bottomed rail, angle fishplates, NPL No.12369, Crown Agents No.12/45/2, made by T. Cooke & Sons Ltd. for the Engineering Standards Committee, in original captioned fitted mahogany case Fishplate profile set made by T. Cooke & Sons Ltd
Key profile, standard, ends and sides, sections 1" from each end, for BS 60lb flat-bottomed rail, Crown Agents No.E6, profile by T. Cooke & Sons Ltd., London & York, in original captioned fitted mahogany case Key profile made by T. Cooke & Sons Ltd
Fishplate profile set, standard, end and side, for BS 50lb flat-bottomed rail, angle fishplates, NPL No.28150, Crown Agents No.12/50/2, by T. Cooke & Sons Ltd. for the Engineering Standards Committee, in original captioned fitted mahogany case Fishplate profile set made by T. Cooke & Sons Ltd
Fishplate profile set, standard, end and side, for BS 80lb flat-bottomed rail, angle fishplates, NPL No.12275, Crown Agents No.12/80/2, made by T. Cooke & Sons Ltd. for the Engineering Standards Committee, in original captioned fitted mahogany case Fishplate profile set made by T. Cooke & Sons Ltd
Rail profile set, standard, end and two sides, for BS 80lb bull-head rail, NPL No.325, Crown Agents No.12/80/3, by T. Cooke & Sons Ltd., London and York, in original captioned fitted mahogany case. Rail profile set, T. Cooke & Sons Ltd.
Rail profile set, standard, end and two sides, for BS 45lb flat-bottomed rail, NPL No.285, Crown Agents No.12/45/1, made by T. Cook & Sons Ltd., London & York, in original captioned fitted mahogany case. Rail profile set, T. Cooke & Sons Ltd
5 1/2 inch photo-visual refracting telescope with manual slow motion, made by T. Cooke & Sons Limited, early 20th century. The telescope is fitted on a ‘class b’ equatorial mounting. Original pedestal and clock drive are missing. 5 1/2 inch Photo-visual refracting telescope by T. Cooke & Sons Limited 1897-1921
Photograph of 18" Siderostat in glazed frame 17 1/4" x 21 1/4" Photograph of 18" Siderostat in glazed frame 17 1/4" x 21 1/4" 1921
Photograph of 3" Zenith telescope, in glazed frame 17 1/4" x 21 1/4". Photograph of 3" Zenith telescope 1921
Fishplate profile set, standard, end and side, for BS 30lb flat-bottomed rail, angle fishplates, Crown Agents No.12/30/2, made by T. Cooke & Sons Ltd. for the Engineering Standards Committee, in original captioned fitted mahogany case Fishplate profile made by T. Cooke & Sons Ltd
Rail profile set, standard, end and two sides, for BS 30lb flat-bottomed rail, NPL 13188, Crown Agents No.12/30/1, made by T. Cooke & Sons Ltd. for the Engineering Standards Committee, in original captioned fitted mahogany case. Rail profile, T. Cooke & Sons Ltd
Fishplate profile set, standard, end and side, for BS 30lb flat-bottomed rail, shallow fishplates, NPL No.13819, Crown Agents No.12/30/3, made by T. Cooke & Sons Ltd. for the Engineering Standard Committee, in original captioned fitted mahogany case Fishplate profile set made by T. Cooke & Sons Ltd
Cooke wide-angle anastigmatic lens. F. 4 1/2", 108mm; series VIIB f.6.5-45 (f.11 largest useable aperture) With two lens caps, in leather case. Fits Thornton-Pickard Time and Instantaneous Camera (1990-5036/173). Cooke Wide-angle Anastigmatic Lens
Floating Zenith Telescope designed by Bryson Cookson, made by Cambridge Scientific Instrument Company with objectice lens by T. Cooke & Sons Ltd in 1900. Used at University of Cambridge, Observatories 1900-11 then the Royal Observatory, Greenwich 1911-51. Floating Zenith Telescope designed by Bryson Cookson 1900
Rail profile set, standard, end and two sides, for BS 80lb flat-bottomed rail, NPL No. 12274, Crown Agents No.12/80/1, made by T. Cooke & Sons Ltd. for the Engineering Standards Committee, in original captioned fitted mahogany case. Rail profile set, T. Cooke & Sons Ltd
Rail profile set, standard, end and two sides, for BS 60lb flat-bottomed rail, NPL No. 12305, Crown Agents No.12/60/1, made by T. Cooke & Sons Ltd. for the Engineering Standards Committee, in original captioned fitted mahogany case. Rail profile set, T. Cooke & Sons Ltd
Fishplate profile set, standard, end and side, for BS 60lb flat-bottomed rail, angle fishplates, NPL No.12370, Crown Agents No.12/60/2, made by T. Cooke & Sons Ltd. for the Engineering Standards Committee, in original captioned fitted mahogany case Fishplate pofile set made by T. Cooke & Sons Ltd.
Rail profile set, standard, end and two sides, for BS 55lb flat-bottomed rail, NPL No.216, Crown Agents No.12/55/1, made by T. Cooke & Sons Ltd., London & York, in original captioned fitted mahogany case with British Haematite Steel Co. Ltd. transfer on lid. Rail profile set, T. Cooke & Sons Ltd
Fishplate profile set, standard, end and side, for BS 55lb flat-bottomed rail, angle fishplates, NPL No.13324, Crown Agents No.12/55/2, made by T. Cooke & Sons Ltd. for the Engineering Standards Committee, in original captioned fitted mahogany case, with British Haematite Steel Co. Ltd. transfer on lid Fishplate profile set made by T. Cooke & Sons Ltd