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Discover how much more efficient and enjoyable your life can be with our innovative products. No matter what your hobby or occupation, there is an intuitive product that lets you focus on your work and not your calculations!

Hewlett Packard HP-15C Collector's Edition RPN Scientific Calculator

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

Replacement Calculator Parts, Overlays, and Power Adapters

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

Used Calculators

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

Calculated Industries KitchenCalc 8300 - Recipe Scaling Calculator

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


Calculators, software, and services for surveying professionals.

Calculator Stands and Pads

Make using your calculator easier and more comfortable.

Calculated Industries NautiCalc Plus 8416 - Navigational Calculator for Boaters

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

Calculated Industries Qualifier Plus IIIx 3415 - World's Best Real Estate Qualifying Calculator

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

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