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Old 19th Apr 2021, 8:04 am   #14
russell_w_b
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Location: Penrith, Cumbria, UK.
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Default Re: Crompton 60W bulb

Quote:
Originally Posted by DMcMahon View Post
' but red bulbs are used in submarines for when they switch to "Red light/Red lighting" operational mode.'
They do that in the 'gloom-room' radar ops at RAF Spadeadam too.
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