National Physical Laboratory:
NPL's first ship tank
National Physical Laboratory:
Long scale Kelvin voltmeter
National Physical Laboratory:
Cannon Gate in the snow
National Physical Laboratory:
Caesium atomic clock
National Physical Laboratory:
Anechoic Chamber
National Physical Laboratory:
Million Volt Testing Transformer
National Physical Laboratory:
BBC filming
National Physical Laboratory:
Pilot ACE
National Physical Laboratory:
Mobile Acoustical Laboratory
National Physical Laboratory:
Sport's Day
National Physical Laboratory:
Duplex Wind Tunnel
National Physical Laboratory:
Women at NPL
National Physical Laboratory:
NPL Jubilee
National Physical Laboratory:
NPL Jubilee
National Physical Laboratory:
Wind testing tower
National Physical Laboratory:
Experiment
National Physical Laboratory:
Microphones
National Physical Laboratory:
Sextants
National Physical Laboratory:
1930s experiment
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Experiment Equipment
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Experiment Equipment
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Measurement
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Remote monitoring of atmospheric pollution
National Physical Laboratory:
An audiometrician using a manual audiometer to measure a child's hearing
National Physical Laboratory:
Technician producing interference gratings
National Physical Laboratory:
Balloon testing at NPL
National Physical Laboratory:
History Website044
National Physical Laboratory:
History Website046
