OH 450 OH450. MODEL- OH450 DESC.- CASIO INC. Accessory
FEATURES- * Overhead calculator which emulates the Casio SL450. * This four-function calculator displays the current operation sign and has a floating negative sign in its eight-digit display. * With change sign- square root- percent and memory keys- this calculator is a fine choice for primary mathematics. * Includes carrying case and instructions. * Teachers can receive this item free from Casio with the purchase of 90 SL450 calculators.
; "OH 450 OH450")