United Scientific DEMO75 Glass Demonstration Lens Set, 6 Pieces, 75mm Diameter bee Includes space underneath for stand

Includes space underneath for stand for phone book or notebook

One our women sun visor hat is enough

Raspberry Pi board

the corresponding relay can be controlled by high or low level

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United Scientific DEMO75 Glass Demonstration Lens Set, 6 Pieces, 75mm Diameter bee Includes space underneath for standUnited Scientific DEMO75 Glass Demonstration Lens Set, 6 Pieces, 75mm Diameter The set contains 6 lenses, one each of double convex, plano convex, concavo convex, double concave, plano concave, and convexo concave lens. Comes in a reusable cardboard storage box. Product Features Package Dimensions: 9. 398 cms (L) x 8. 636 cms (W) x 8. 89 cms (H) Product Type: Lab Supply Package Quantity: 1 Country Of Origin: United States