Code: EDUCPY5502
Bell jars are often used in laboratories to form and contain a vacuum. It is a common science apparatus used in experiments.
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Fine coiled wire connections to terminals mounted in rubber bung sealing the glass jar. A 15cm Dia. electric bell operating on 4-6 volts AC/DC suspended on rubber cord in bell jar. Size 20 x 10 cm. For use on pump plate not less than 15cm dia.
