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measurement of wavelength using the phase difference between transmitter and receiver etc
This range of puppets features a boy and girl of 3 ethnic groups
Designed to make a wide range of open type models
Ghanaian boy and Chinese boy
Complete with a neck strap with breakaway safety feature
Lamp And Stand Clearance measurement of wavelength using theComprising a 12V 24W lamp in a conical lamphouse mounted on an adjustable boss. The lamphouse has cut outs in its side giving a clear passage for the light while restricting the amount of stray illumination. The assembly is supported on a rod with a triangular cast base. Triangular base: 100mm side x 28mm high. Overall height of stand: 240mm. Supplied with lamp and lead with 4mm plugs.
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