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Early models of key finder were sound-based, and listened for a clap or whistle (or a sequence of same), then beeped for the user to find them. Determining what was a clap or a whistle proved difficult, resulting in poor performance and false alarms. Because of this low quality and unreliability, these early key finders were soon discarded and ...
The Air Force Specialty Code (AFSC) is an alphanumeric code used by the United States Air Force to identify a specific job. Officer AFSCs consist of four characters and enlisted AFSCs consist of five characters. A letter prefix or suffix may be used with an AFSC when more specific identification of position requirements and individual ...
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1 + 1 / 3 Minus-blue filter; complements #32 minus-green and #44A minus-red. Used with Ektachrome or Aerochrome Infrared films to obtain false-color results. Used in ophthalmology and optometry in conjunction with a slit-lamp and a cobalt blue light to improve contrast when assessing the health of the cornea and the fit of contact lenses ...
An example of the Landolt C eye chart (also known as the Japanese eye chart). Numerous types of eye charts exist and are used in various situations. For example, the Snellen chart is designed for use at 6 meters or 20 feet, and is thus appropriate for testing distance vision, while the ETDRS chart is designed for use at 4 meters. [16]
The bitting code is used in conjunction with a key's Depth and Spacing Number to completely determine all relevant information regarding the key's geometry. [1] Each number in the bitting code corresponds to a cut on the key blade. For example, a bitting code of 11111 with Depth and Spacing Number 46 specifies a Kwikset key with five shallow cuts.
92 Code: 72: Best regards: Amateur radio slang. While operating QRP / low power 92 Code: 73: Best regards: 92 Code: 75: Derogatory term for a disliked operator (Referring to 75 meter ham band) Amateur radio slang, USA only 77: Long Live CW (Morse Code), wishing you many happy CW contacts 88: Love and kisses: 92 Code: 99: Get lost!
Comprehensive service offerings include contact lens dispensing, free adjustments and repairs, and doctors of optometry at or next to every store. Visionworks also sells contact lenses online. [3] On June 27, 2019, VSP Global announced plans to acquire Visionworks. [6] The acquisition was completed on October 1, 2019. [7]