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