Arco Abacus-6 Rows

A simple device useful for counting and among the first calculating devices ever used consists of a wooden board mounted base,over which 'U' shaped brass wires are mounted so that the arms of wires are on each side of board.Each wire has 20 beads (10 each of two colour), which assists in counting and calculations.4 number of rows of brass wire

Warning: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.www.p65warnings.ca.gov

Our products are for use in a Laboratory or educational setting only.Our products are not for kids. Keep the products away from children 13 and under.