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Solid door with lock & key
this 10X eyepiece is essential for any microscopy project
covering the entire visible spectrum
high efficiency
Physics Resistance Box (1 to 1000 Ohms) ball mill grinder Solid door with lock &Physics Resistance Box (1 to 1000 Ohms) For accurate work, Physics Resistance Box in polished wooden box and panel figured in wh Split brass contact blocks hold precision cut, interchangeable plug having moulded black fluted tops. Coils of constantan wire, double silk covered are wond co efficient. Accuracy 0. 1%. Range In Ohms Total Ohms No of Coils 1 50 110 4 1 100 210 9 1 500 1110 12 1 1000 2110 13 1 5000 11110 16 1 10000 21110 17
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