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Optically Worked Double Convex Glass Lens, 75mm Diameter, 250mm Focal Length Included_Bosshead Plastic holder atop a 4

SKU 35026319371
4.2
Optically Worked Double Convex Glass Lens, 75mm Diameter, 250mm Focal Length Included_Bosshead Plastic holder atop a 4
Optically Worked Double Convex Glass Lens, 75mm Diameter, 250mm Focal Length Included_Bosshead Plastic holder atop a 4
Optically Worked Double Convex Glass Lens, 75mm Diameter, 250mm Focal Length Included_Bosshead Plastic holder atop a 4
Optically Worked Double Convex Glass Lens, 75mm Diameter, 250mm Focal Length Included_Bosshead Plastic holder atop a 4
Description

Plastic holder atop a 4

Solid glass friction rod that develops a positive electrostatic charge when rubbed with silk or wool

Built for invertebrate study

Designed for full-image reflection demos

Optically Worked Double Convex Glass Lens, 75mm Diameter, 250mm Focal Length Included_Bosshead Plastic holder atop a 4Long focal double convex glass lens at 75mm diameter and 250mm focal length, the f 3. 3 geometry stretching focal throw for distant screen projection of well formed real images.

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