Three of eighty smoked glass slides recording blood pressures, with name, date, notes, etc., English, 1874. Unknown Maker. 3 of 80 smoked glass slides Ophthalmology 1874
Five of eighty smoked glass slides recording blood pressures, with name, date, notes, etc., English, 1874. Unknown Maker. 5 of 80 smoked glass slides Ophthalmology 1874
Forty four of eighty smoked glass slides recording blood pressures, with name, date, notes, etc., English, 1874. Unknown Maker. 44 of 80 smoked glass slides Ophthalmology 1874
Thirty nine of eighty smoked glass slides recording blood pressures, with name, date, notes, etc., English, 1874. Unknown Maker. 39 of 80 smoked glass slides Ophthalmology 1874
Thirty seven of eighty smoked glass slides recording blood pressures, with name, date, notes, etc., English, 1874. Unknown Maker. 37 of 80 smoked glass slides Ophthalmology 1874
Engineer's combination rule, c. 1870 includes protractor, depth gauge, rule and slide rule function. This combination rule includes a protractor on the jointed hinge and a brass depth gauge sliding section and a sliding logarithmic scale which could be used as a slide rule type calculator. Engineer's combination rule, c. 1870 includes prot Industrial Metrology 1870
Forty six of eighty smoked glass slides recording blood pressures, with name, date, notes, etc., English, 1874. Unknown Maker. 46 of 80 smoked glass slides Ophthalmology 1874
Fifty of eighty smoked glass slides recording blood pressures, with name, date, notes, etc., English, 1874. Unknown Maker. 50 of 80 smoked glass slides Ophthalmology 1874
Fifty one of eighty smoked glass slides recording blood pressures, with name, date, notes, etc., English, 1874. Unknown Maker. 51 of 80 smoked glass slides Ophthalmology 1874
Thirty of eighty smoked glass slides recording blood pressures, with name, date, notes, etc., English, 1874. Unknown Maker. 30 of 80 smoked glass slides Ophthalmology 1874
Walschaerts radial valve motion (right hand side) from 0-4-4-0T double Fairlie locomotive 'Snake', No. 238 Class 'B', built by Avonside Engine Co., Bristol, 1874 for Otago Provincial Council, New Zealand, believed to be one of the first locomotives to be built in Great Britain with Walschaert's valve gear, after a boiler accident in c.1881 the valve gear and cylinders were incorporated into a steam crane. Walschaert's valve gear from double Fairlie locomotive Locomotives and Rolling Stock Components 1874
Paper dispenser for siphon recorder, designed by William Thomson (Baron Kelvin) made by James White & Company, Glasgow, Scotland, 1870. Used by the Eastern Telegraph Co in Egypt, and later in India paper dispenser for Siphon recorder, 1870 Telecommunications 1870
