Description
and steel cubes machined to the same 1
the moderate curvature spreading light gently for divergence and virtual-image-formation work in refraction demos
fastened by two wide-pad stainless steel thumb screws under heavy torsional load
Locking control at any extension on this two-meter retractable tape measure
Demonstration Spherometer Subcategory_Weights and Masses and steel cubes machined toDemonstration spherometer with an oversized 133 mm dial head and baked enamel finish, letting an entire classroom read spherometer values before students work with benchtop units.
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