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[edit] DescriptionStanley's PowerLock is a time-tested design. Introduced in March 1963, it became one of the first pocket-size heavy-duty tape measures suited for a variety of users, from handymen to metal fabricators to carpenters. Back then, folding rulers were still widely used, and the PowerLock easily bested them for speed and accuracy. Its slide-operated thumb latch, shape, and ease of use made it a breakthrough design. That design is so good that Stanley still uses it. Today's PowerLock consists of a rugged chrome-plated ABS plastic case, a bright yellow sliding thumb latch, and an end hook held to the spring steel blade with three rivets. The blade is coated with Mylar polyester, making it slippery and rust-resistant. The blade feeds out quickly and smoothly and reels back into its housing the same way. The design is elegant, simple, and extremely rugged. [edit] SourcePopular Mechanics Article, "Worth the Money: Stanley PowerLock Tape Measure", written by Roy Berendsohn, Mar 20, 2014. [edit] License"Fair Use Doctrine" applies to reproduction and use of this image and information. No copyright permission requested, granted or needed under the authority of 17 U.S.C. § 107. Notwithstanding the provisions of sections 17 U.S.C. § 106 and 17 U.S.C. § 106A, the fair use of a copyrighted work, including such use by reproduction in copies or phonorecords or by any other means specified by that section, for purposes such as criticism, comment, news reporting, teaching, scholarship, or research, is not an infringement of copyright. In determining whether the use made of a work in any particular case is a fair use, the following four factors have been considered: (1) the purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes; (2) the nature of the copyrighted work; (3) the amount and substantiality of the portion used in relation to the copyrighted work as a whole; and (4) the effect of the use upon the potential market for or value of the copyrighted work. No other transfer of this license should be presumed or taken.
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