Ring & Ball, Separate Handles, 18mm

Product Code: 1245602

18mm ball and ring individual mounted onto rods with handles. Used in the demonstration of thermal expansions. The ball will pass through the ring when cold but will not pass through after being heated.
Ball measures 18mm in diameter. Ball, ring, and rods are made of high quality brass. Mounted onto superior wooden handles. Excellent demonstration tool for science classrooms.

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