nightjar wrote in message
. ..

"BigWallop" wrote in message
...
...
Just thinking out loud here, but wouldn't the big GLS lamp in the middle
of
the ceiling, yes, the thing inside that light shade, tell you if the
switch
is on or off ?

Perhaps it is to tell him whether the switch is off before he takes the
blown GLS lamp out to change it?

I've replaced all the filament lamps in the indicators on the machines in
my
factories with mains rated LED 'lamps', supplied with the same fittings.
They are a lot dearer, but they are also far more reliable and the savings
on maintenance (most take a disproportionate amount of time to change)
covers the extra cost.

Colin Bignell



Possibly an indicator for a loft, attic, cellar or cupboard light....

Or perhaps it's to stop the electricity usage when the (unobserved) light is
both off and on simultaneously (junk science meets Schroedinger)

cheers
Richard

--
Richard Sampson

email me at
richard at olifant d-ot co do-t uk