Unilab/Philip Harris old style planck's constant kit

Nick Mitchener

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I'm trying to build up a class set of these which I modify to use with DMMs and LEDs. The original design needs a mains lamp and an oscilloscope.

If anybody has any they don't want I'd be very happy to pay postage to get them. They need a bit of bubble wrap so the valve doesn't get too shaken about.

Unilab are a black box, Philip Harris a a grey box. Both are the same design with a window to see the valve and metal posts to hold the filters in place.
 
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