US$ 17.95
Long-focal double-convex glass lens at 75mm diameter and 500mm focal length
and an underground lake
Pairs 50mm of aperture with a 200mm focal length on a convex glass surface
Rat dissection model demonstrates rodent anatomy
75-inch post for attachment to standard rod-and-clamp stands
Wooden Test Tube Support with Draining Pins, 6-Place Science at Home Long-focal double-convex glass lens atDraining pins paired with a turned post hardwood frame give this six place test tube support inverted drying plus upright storage for tubes up to 19 mm across.
US$ 17.95
US$ 17.95
US$ 103.95
US$ 103.95