![Stokes Publishing OH-450L Casio SL-450L Overhead Calculator Image - Click to enlarge](https://s.turbifycdn.com/aah/calculatorsource/stokes-publishing-oh-450l-casio-sl-450l-overhead-calculator-14.gif) ![](/lib/calculatorsource/trans1x1.gif) This four-function calculator displays the current operation
sign & has a floating negative sign in its eight-digit display.
With change sign, square root, percent and memory keys,
this calculator is an fine choice for primary mathematics.
Includes carrying case and instructions .
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