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2. Indicator (distance amplifying instrument) - Wikipedia

   en.wikipedia.org/wiki/Indicator_(distance...

   Ideal test indicator pushed. Prior to modern geared dial mechanisms, test indicators using a single lever or systems of levers were common. The range and precision of these devices were generally inferior to modern dial type units, with a range of 10/1000 inch to 30/1000 inch, and precision of 1/1000 inch being typical.

3. Seven-segment display - Wikipedia

   en.wikipedia.org/wiki/Seven-segment_display

   [10] [11] Other designs used 1 or 2 dies for every segment of the display. [ 12 ] [ 13 ] The seven-segment pattern is sometimes used in posters or tags, where the user either applies color to pre-printed segments, or applies color through a seven-segment digit template , to compose figures such as product prices or telephone numbers.

4. Logarithmic scale - Wikipedia

   en.wikipedia.org/wiki/Logarithmic_scale

   Unlike a linear scale where each unit of distance corresponds to the same increment, on a logarithmic scale each unit of length is a multiple of some base value raised to a power, and corresponds to the multiplication of the previous value in the scale by the base value. In common use, logarithmic scales are in base 10 (unless otherwise specified).

5. Inclinometer - Wikipedia

   en.wikipedia.org/wiki/Inclinometer

   The astrolabe is an example of an inclinometer that was used for celestial navigation and location of astronomical objects from ancient times to the Renaissance. A tilt sensor can measure the tilting in often two axes of a reference plane in two axes. In contrast, a full motion would use at least three axes and often additional sensors.

6. Radar display - Wikipedia

   en.wikipedia.org/wiki/Radar_display

   This produced a time base that was 7 feet (2.1 m) long, allowing very highly accurate measurements of range. To improve the accuracy of angle measurements, the concept of lobe switching became common in early radars. In this system, two antennas are used, pointed slightly left and right, or above and below, the boresight of the system.

7. Eye pattern - Wikipedia

   en.wikipedia.org/wiki/Eye_pattern

   Constant binary 1 and 0 levels are shown, as well as transitions from 0 to 1, 1 to 0, 0 to 1 to 0, and 1 to 0 to 1. In telecommunications , an eye pattern , also known as an eye diagram , is an oscilloscope display in which a digital signal from a receiver is repetitively sampled and applied to the vertical input ( y-axis ), while the data rate ...

8. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Dot-matrix display - Wikipedia

   en.wikipedia.org/wiki/Dot-matrix_display

   A 16×2-character dot-matrix display, where each character is made from a grid of 5×7 dots. A dot-matrix display is a low-cost electronic digital display device that displays information on machines such as clocks, watches, calculators, and many other devices requiring a simple alphanumeric (and/or graphic) display device of limited resolution.