HEATKEYS

Slide Rule Museum/Library/Encyclopedia

The Museum of HP Calculators displays and describes older Hewlett-Packard calculators. There are also sections on calculating machines and slide rules as well as sections for buying and selling HP calculators, an HP timeline, collecting informatio...

MIT is devoted to the advancement of knowledge and education of students in areas that contribute to or prosper in an environment of science and technology.

YouTube is a place to discover, watch, upload and share videos.

Buy and sell electronics, cars, clothing, apparel, collectibles, sporting goods, digital cameras, and everything else on eBay, the world

Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.

Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia e...

Instructables is the Biggest How To and DIY community where people make and share inspiring, entertaining, and useful projects, recipes, and hacks.

The oldest and largest private university in the Rocky Mountain region, DU is distinguished by innovative and rigorous undergraduate, graduate and professional programs and service to the public good.

Oughtred Society Slide Rule Collectors