Description
Pairs 50mm of aperture with a 200mm focal length on a convex glass surface
and lens-behavior studies
Two-inch vinyl-coated fingers on this three-finger extension clamp mount to a swivel boss head fitting rods up to 18mm
drawing both DC and AC simultaneously with short-circuit protection via a 0
Handheld Digital pH Tester, EI 0961 Subcategory_Condensers Pairs 50mm of aperture withHandheld digital pH tester designated EI 0961, displaying solution acidity on a benchtop grade meter small enough for fieldwork and classroom water quality lessons.
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