measurements and research for electronic, optical, time and frequency, and radiation technologies at the National Institute of Standards and Technology

TFD Encyclopedia includes Computer Desktop Encyclopedia, Columbia Encyclopedia and many other great sources.

The MiT710 Cable Length Meter is the ideal tool to measure wire or cable inventories remaining on spools. Simply attach the kelvin clips to either end of the cable under test and set the correct wire type and gauge.

Online Conversion is a resource for weights, measures, calculators, converters.

Sizes of shoes, sheets, mattresses, baseball fields and other objects; grades; indexes (such as body mass index); the metric system and other systems and units of weight, measure and other properties, foreign and domestic, old and new.

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 encyclopedia, Wikipedia encyclopedia, Hutchinson encyclopedia, examples from classic literature, pronunciations, word browser, glossary. Free access

Convert measurement units for metric, imperial systems and more. Includes conversion charts, tables.