Watt's steam engine indicator
1796-1890
Ground position indicator, Mk 4.
Richard's patent steam engine indicator in wooden box
Crosby steam engine indicator, in box
1879-1896
Simplex patent steam engine indicator
Tabor steam engine indicator, in case with key
Magnetic field indicator in chrome-plated metal case
1950-1970
Foster Cambridge Temperature Indicator
1970-1979
Smith Air Speed Indicator Mark IVA
Aircraft instrument: air apeed indicator by E. Hollocombe Clift
1914
Richards Steam Engine Indicator
Kenyon's pistonless steam engine indicator, 1878
1878-1890
McNaught type steam engine indicator by J. Hannan
Hopkinson steam engine indicator
Richards Improved Patent Steam Indicator
Short's gas indicator, made by E. F. Gurnett
Trico-Folberth semaphore type motor vehicle direction indicator
circa 1952
Jet pipe temperature indicator (Smith's)
Whipple patent temperature indicator
1900-1982
Rudder angle indicator and junction box
1948-1951
Zero-Reader flight director indicator
Boxed set containing a bottle of BDH Universal indicator
1960-1980
Honeywell `Electronik 15' Temperature Indicator
1971
Ferranti elevation range indicator
1965
Ferranti type 1 high voltage indicator
1935-1950
Steam engine indicator with concentric drum
Eye-ball indicator
1920
Desynn indicator
"Simplex" external spring steam engine indicator, Type B. In case.
Versaflo™ air flow indicator
2020-2021
Young's speed indicator, with open dial, 1881, on mahogany stand
1881-1888
Six point totally enclosed indicator
1900-1982
illuminated moving scale indicator with transformer and operating switch
Air position indicator, Mk 1B.
McCallam's patent distance indicator, 1864
1864
Whipple Temperature Indicator serial no. C620290
1957
Adam's play indicator in fitted case
Pair of Darke's patent steam engine indicators boxed separately and contained within a larger case
Turn-and-slip indicator
Autosyn altitude indicator
4 temperature indicators from hot air balloon fatal accident at Birmingham
Roller blind altitude indicator
Control Surface Position Indicator
Zero-reader flight-director indicator control pane
"Atkinson-Schattner" maximum demand indicator
Indicator, two button
German DVG indicator value of World War II
Fuel Quantity Indicator
