Our unique Chem Time Clock replaces the usual clock numbers with symbols of elements having corresponding atomic numbers. "H" replaces "1", "He" replaces "2", etc. The idea for this clock came from Prof. Bassam Shakhashiri at the University of Wisconsin, who asked Ron Perkins to make one in the summer of 1983. It is the perfect addition to a science classroom.(Requires 1 AA Battery - not included.) 13" diameter. Attractive green border.
Chem Time Clock
This product is shipped from our supplier's warehouse in CT, United States
This product is brand new and includes the manufacturer's warranty, so you can buy with confidence.
A 25% handling charge is levied against all authorized returns except those due to our error. Unauthorized returns are subject to a 40% handling charge. Damages & defects must be reported to us within 14 days.
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