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