Bell jar cages help protect the user from potential harm via fracture or
implosion of the glass bell jar. They limit potential liability
claims. They are and can be fabricated to
sizes to accommodate the size of the jar being used.
Here are some pictures of what the bell jar cages look like and some of
the features. These are very simple. A rubber strap is
sometimes employed part way down the bell jar barrel to insulate it from
impact with the cage when this is lowered over the jar.
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