![Test Overlay for HP-16C Mode in HP-15C Collector's Edition Image - Click to enlarge](https://s.turbifycdn.com/aah/calculatorsource/test-overlay-for-hp-16c-mode-in-hp-15c-collector-s-edition-12.gif) ![](/lib/calculatorsource/trans1x1.gif) Custom-made overlay for HP-15C Collector's Edition to test and analyze HP-16C features. Made of flexible silicone with labels in three colors.
This is not a mass-produced product and might not be perfect - it is intended for exploration of calculator features and not for professional purposes. Please keep in mind that HP-16c mode is not officially supported and may cause issues.
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