US$ 85.00
with thumb-wheel jaw movement for fine dimensional precision
Pack of 6 borosilicate 3
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
375-inch base
Free-Standing Wooden Lens Holder for 50mm Lens Human Anatomy_Human Anatomy Charts & Models with thumb-wheel jaw movement forHolds 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.
US$ 85.00
US$ 130.00
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