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Vintage photograph of the interior of the Generating Station, City and South London Railway, 1899
Close-up of an vintage ancient voltmeter isolated on white background
old  measure on white, isolated
Vintage engine room telegraph isolated on white background
Vintage illustration from a book of my private collection: \
Barometer on white background
Variable rate utility meters or multiple tariff meters allow utilities to charge customers different rates tariffs at different times of day
Old diesel locomotive's control panel with analog meters
Close-up of an ancient voltmeter, isolated on white
A close-up of an analog ammeter, displaying a scale from 0 to 60 amperes. The device,  shows signs of wear, suggesting it may be vintage or used in industrial settings.
Old Electric Kilovolt  Power Ammeter Cut Out.
A brass ship telegraph indicating instructions to the engine room full length, isolated on white
Vintage photograph of Camille Flammarion, French astronomer, looking through telescope at Observatory at Juvisy-sur-Orge, 1890s
Close-up of an vintage ancient voltmeter isolated on white background
Chic office supplies as gift ideas
Mechanical voltmeter through a light bulb close-up. Voltage measuring device on a gasoline generator
Metronome in action
old ammeter on black metal plate,
Close up of needle indicating angle for a crane.
A closeup of indicator dials from the famous 'Bombe' machine at Bletchley Park used for deciphering German encrypted 'Enigma' messages
Optical tool with mirrors and magnifying glasses
Close-up of an vintage ancient ammeter isolated on white background
Analog Retro Exposure Light Meter Close-up
Girl physics lesson study models of physical devices
old vintage grunge measuring device, watt meter, with broken glass
Old Gauges
very nice telegraph as old technological bacground
Old telescope
Free Images: "bestof:Practicalelec reflecting galvanometer.jpg taken from William Edward Ayrton Practical Electricity London Cassell 1891 http //www archive org/details/..."
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