Free-Standing Wooden Lens Holder for 50mm Lens Human Anatomy_Human Anatomy Charts & Models Suspends a 20mm solid zinc

Suspends a 20mm solid zinc cube from a spring scale for water-displacement density measurement

4A single-phase rheostat with cover-protected constantan winding on a 200x56mm tube and 4mm safety socket terminals

MANUFACTURED BY EISCO LABS || Eisco Labs proudly manufactures its own products using state-of-the-art equipment

375-inch base

with thumb-wheel jaw movement for fine dimensional precision

Free-Standing Wooden Lens Holder for 50mm Lens Human Anatomy_Human Anatomy Charts & Models Suspends a 20mm solid zincHolds 50mm diameter lenses upright on a free standing wooden base, the simple mount steadying optics elements at bench height for refraction, image formation, and ray tracing demos.