Description

spindle formation

4 inches with thread-fitted joints tuning pressure by screw

six convex/concave lenses spanning 10-50cm focal lengths

Hand-painted skin cross-section enlarged 300 times exposes epidermal layers

green) and three secondaries (cyan

Cross Wires for Optics Experiments Lab Supplies_Filtering Supplies spindle formationCross wires set inside a 10mm aperture on a 75mm circular black metal screen, providing a fixed sighting reference for telescope and spectrometer alignment on the optical bench.

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Cross Wires for Optics Experiments Lab Supplies_Filtering Supplies spindle formation

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