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Three demonstration lens clips
TEACHING AIDS
demonstration stand
Mindt, Walter
Europe: Germany
1930
metal; (box) cardboard
each stand clip: 27 x 37 x 15 mm; box: 24 x 163 x 46 mm

Two single and one triple lens clips on flat bases for bench-top demonstration use. Black metal, one with disc bearing slit and two pinholes. In black cardboard box.


2005.498

Gift of Mr Peter Prime, FCOptom, 2005



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thumbnail Letter from Dr Walter Mindt to Mr E.L. Ebbage
Mindt, Walter
1930-10-02
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