US$ 180.00
and vacuum connections in laboratory apparatus
Bull frog dissection model with open back reveals vertebral column
long-nose pliers
this wool cloth is a standard accessory for electroscope and Van de Graaff work
Large Inertia Demonstration Model Subject_Physical Science and vacuum connections in laboratoryTrigger actuated inertia demonstrator that slides a dimpled plate out from under a steel ball, dropping the ball vertically into a receptacle to show Newton's first law in a single motion.
US$ 180.00
US$ 130.00
US$ 130.00
US$ 140.00
US$ 125.00
US$ 90.00
US$ 120.00
US$ 120.00
US$ 160.00
US$ 59.99