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HP-15C Collector's Edition Calculator is now available!

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We have battery doors, covers, rubber feet, adapters, batteries, cables, and more!

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A full selection of used graphing, financial, and scientific calculators. All protected by our 30 day money back guarantee!

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Avoid wasted food and culinary disasters: scale recipes, convert measurements, and more quickly and easily!

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Calculators, software, and services for surveying professionals.

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Make using your calculator easier and more comfortable.

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Quickly and accurately solve navigational problems -- boat, sail, or fly like a pro!

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Impress your clients with quick, accurate answers to their most pressing questions!

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