US$ 429.50
Pairs 50mm of aperture with a 200mm focal length on a convex glass surface
75-inch post for attachment to standard rod-and-clamp stands
25-inch gear train simple-machine model arrives ready to use with no assembly required
and stirrer for thermal-mixing measurements of specific heat and heat of reaction
Wooden Test Tube Support with Draining Pins, 6-Place Science at Home Pairs 50mm of aperture withDraining 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$ 429.50
US$ 4464.50
US$ 620.00