White Screen


laboratory stand. Screen: Normally we use white board or projection screen, but white … holes are punched in more or less brightly illuminated areas of the … accurate measurements can be done with school light sensors.

KSh220.00

laboratory stand. Screen: Normally we use white board or projection screen, but white … holes are punched in more or less brightly illuminated areas of the … accurate measurements can be done with school light sensors.

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