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