File:Casio fx-550S.png: Revision history

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31 March 2022

  • curprev 03:2503:25, 31 March 2022‎ Jimbo talk contribs‎ 184 bytes +184‎ Casio fx-550S scientific calculator, circa ~1986 Back reflector and polarizer were replaced with substitute due to vinegar syndrome.
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