Lens Holder, Wooden. Wooden, Comprising an upright 100 mm high, with V shape slot to hold a convex or concave lens, mounted on rectangular base 100 x 50 mm
Lens Holder, Wooden. Wooden, Comprising an upright 100 mm high, with V shape slot to hold a convex or concave lens, mounted on rectangular base 100 x 50 mm
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