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Pick a question, a maker, a city, a century, or a museum. Picking two narrows the list to objects that share both.

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Maker (two or more objects)

City

Century

Museum

Kind

English Planispheric Astrolabeabout 1300-1450 Persian Planispheric Astrolabe1372-1373 Italian Planispheric Astrolabeabout 1475 Planispheric Astrolabe Engraved with Arabic Script1504 Hartman's Planispheric Astrolabe1537 · Nuremberg European Planispheric Astrolabe1542 French Planispheric Astrolabe1548 Planispheric Astrolabe Similar in Style to Those of Egnazio Dantiabout 1580 Persian Planispheric Astrolabe1611 Indo-Persian Planispheric Astrolabe1643 · Lahore Indo-Persian Planispheric Astrolabe1659 · Lahore Persian Planispheric Astrolabeabout 1682 Planispheric Astrolabe from Muslim Spain1691 Persian Planispheric Astrolabeabout 1715 · Eşfahān Microscope1730-1760 Portable Equatorial1748 Sundialabout 1750 · New England Microscopeafter 1750 · Nuremberg Persian Planispheric Astrolabe1775 Spy Glass1775-1800 · London Celestial Planisphere Called Astrolabe for Latitude 411780 Beam Balance1780 - 1820 Surveyor's Vernier Compassabout 1785 · Philadelphia Pocket compass from the Lewis and Clark Expedition, 1804-1806about 1804 · Philadelphia Balance1807 box chronometer movementc1810 · London James Wilson's Terrestrial Globe, 18111811 · Vermont Bond Marine Chronometerabout 1812-1815 · Boston Thomas Arithmometerabout 1820 · Paris Microscope, Lerebours1829 · Paris Hair Hygrometerabout 1829 · Paris Polariscopearound 1830 · Paris Heliostatabout 1830 · Paris Daniell Hygrometerabout 1831-1844 · London Polariscopeca. 1834-1844 · Paris Solar Microscopeabout 1840 Melloni Benchearly 1840s · Département de Ville-de-Paris Solar Compass1840s · Cincinnati Grunow Spherometerafter 1849 · New York City Patent Model for Circular Slide Rule Invented by John W. Nystrombefore 1851 · Philadelphia Hatfield Machine for Adding Numbers1854 · Lewisburg Sextant1856-1866 · New York City Equatorial Sextant1856 Hill Arithmometer1857 · Waltham William W. Wythes Cyclo-Ellipto-Pantograph Patent Model1858 · Philadelphia Burns Addometer1858 · New York City Spectroscopeearly 1860s · Paris Patent Model for Triangular Drafting Scale Invented by Josiah Lyman1863 · Lenox Liquid Compass1863 · Boston Chronographabout 1868 · Boston Rotating Mathematical Table, Sinclair's Freight Computer1869 · Waterville Barbour Calculating Machine Model1872 · Boston Spectroscope1873-1881 · New York City Spectrometer1873-1881 · New York City Winlock & Huddleston Psychrometer1873 · Boston Baldwin Arithmometer1874 · Philadelphia Patent Model for Estimator Slide Rule Invented by Fredric Maurice Stapff1874 Barbour Calculating Machine1875 · Boston Baldwin Calculating Engine1875 · St. Louis Patent Model for Parallel Rule and T-Square by Eugene Towne1877 · North Dana Jamin Apparatus1879-1882 · Paris Projection Polariscopearound 1880 · Paris Leyden Jar Batteryabout 1880 Dry Card Compass with Binnacle1880 · Glasgow Log and Rotor, Patent Model1881 Patent Model for Simplex Slide Rule Clasp Invented by Rudolph C. Smith1887 Comptometerca. 1887 Microscopeabout 1890 · London Keuffel & Esser 1741 Thacher Cylindrical Slide Rule1890s · New York City Odhner Arithmometerabout 1896 · St. Petersburg Heliostataround 1900 · Pittsburgh Elliptic Trammelabout 1900 Peerless hanging letter scalec. 1900 Odometer by J. D. Robertsc. 1900 Fessenden electrolytic radio signal detector1903 Triner postal scale1912-1926 Ski-Optometer (Woolf Phoropter)1913-1917 Plotter, Driftca. 1918 Sextant, Brandis, with Willson Bubble Telescope, Earlyca. 1919 Recorder, Air Distanceca. 1922 Receiver, Radio Range, ARC, Lab Prototype, Model B1929 Sight, Drift & Ground Speed, Gattyca. 1931 Watches, Army Air Corps, Avigation [Air Navigation], A-6ca. 1934 Circular Slide Rule, William J. Powell1935 Dead Reckoning, E-6B, Prototype1942 Plotting Board, Navy, Mark 3A1942 Indicator, Carbon Monoxide1943 Libby Low Level Counter1950 · Cambridge Pickett N600-ES Log Log Duplex Slide Ruleabout 1962 · Chicago Civil Defense radiation dosage calculatorc. 1963 Civil Defense pocket dosimeterc. 1963 Projection Polariscopelate nineteenth century · Paris polariscopelate 19th century · Philadelphia Vibration MicroscopeParis Surveyor's CompassTroy Surveyor's Vernier CompassTroy Vernier Compass with TelescopeTroy Surveyor's CompassWoodstock Octantmid 19th century · New York City General Radio type 726-A vacuum tube voltmeter Terrasphere Wheastone Bridge BalanceNuremberg Steelyard17th century PyrometerLondon Sun Compass, Bumstead Slide Rule, Chemical, Sally Ride Voltmeter / Ammeter, E-1 Barograph Sundial compasslate 17th–early 18th century Traveling sundial and compassearly–mid-18th century