Casio Advanced Scientific Calculator with 2-Line Natural Textbook Display (FX-115ES)
Price 20.99 USD
279 functions, including 40 metric conversions * 2-line, 12-digit Natural Textbook display * Solar Plus power with battery back-up * Slide-off protective hard case * Currently allowed on AP, SAT, PSAT, NMSQT, and all NCEES examinations.