Sectioned catalyst convertor matrix for car exhaust, 1982-1983
1982-1983
Two foot geodetic theodolite, British, 1826-1828
1826-1828
Edison's electric carbon filament lamp
1879
Very early Edison carbon filament lamp.
1879
Three Russian coins of platinum dated 1828
1828-31
Langley's Bolometer, 1880-1890
1880-1890
Two foot geodetic theodolite, 1826-1828
1826-1828
Rectum Thermometer, 1886-1930
1886-1930
Brass reflecting circle.
1865-1871
Heurtley magnifier, 1919.
1919
Langley's 'Great' Bolometer, 1880-1890
1880-1890
Borda type repeating circle.
1805-1815
Callendar's Bolometer, 1914
1914
Model of Callendar's Sunshine Receiver, 19th Century
1895-1910
Altazimuth theodolite, British, 1816-1850
1816-1850
Clutch Pencil with Refill, 1977
1977
X-ray tube with separate anode
1905-1909
Platinum
1862-1880
Davy Infra-red Reflection Apparatus.
1876
Early Platinum Electrical Resistance Thermometer, 1871-1890
1871-1890
Callendar's Absolute Recording Bolometer, 1905
1905
Davidson Photomicrographic Camera
circa 1920
Siemens Pyrometer Sensor, 1890
1890
Early Platinum Electrical Resistance Thermometer, 1871-1890
1871-1890
McLeod's vacuum gauge (imperfect)
1880
Crookes' Radiometer, 1872-1879
1872-1879
Early Platinum Electrical Resistance Thermometer, 1871-1890
1871-1890
Frog's Heart Thermometer, 1887
1887
X-ray focus tube with adjustable anti-cathode
1897
Early Platinum Electrical Resistance Thermometer, 1871-1890
1871-1890
Platinum resistance temperature sensor made by Rosemount Engineering Co.
Air Temperature Grid, 1902-1930
1902-1930
Bulb of a Porcelain Air Thermometer, 1887
1887
Heavy-current x-ray tube with separate anode
Air Temperature Grid, 1886-1930
1886-1930
Early Platinum Electrical Resistance Thermometer, 1871-1890
1871-1890
Main part of tacheometer, British, 1885-1895
1885-1895
Part of Combined theodolite & plane table, 1925-1928
1925-1928
Part of Eckholdt's Patent Omnimeter, British, 1868-1900
1868-1900
Double sounding quintant
1845-1850
Platinum 6 rouble coin of Tsar Nicholas I
1831
Large goniometer and spectrometer by R. Fuess (unsigned)
1880-1885
First platinum jet
Theodolite for photogrammetric outfit, 1901-1915
1901-1915
Platinum 12 rouble coin of Tsar Nicholas I
1830
Platinum 3 rouble coin of Tsar Nicholas I
1828
Gentilli type tacheometer, Austrian.
1868-1876
Set of nineteen standard apothecaries' weights
1879-1880
platinum (metal)
Spongy platinum
before 1889