Photometer Jolly's
SKU PH0580
Block comprising two pieces of polythene approx. 25 mm square 10 mm thick separated by tin foil, on wooden stand and aperture 12 mm diameter.
Block comprising two pieces of polythene approx. 25 mm square 10 mm thick separated by tin foil, on wooden stand and aperture 12 mm diameter.
Block comprising two pieces of polythene approx. 25 mm square 10 mm thick separated by tin foil, on wooden stand and aperture 12 mm diameter.
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