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Some engineering students and engineers carried ten-inch slide rules in belt holsters, a common sight on campuses even into the mid-1970s. Until the advent of the pocket digital calculator, students also might keep a ten- or twenty-inch rule for precision work at home or the office [24] while carrying a five-inch pocket slide rule around with them.
The triple prime was used in the result of multiplying feet & inches by feet & inches to get an area. 1st feet & inches by 2nd feet + 2nd feet & inches by 1st feet &c. gives 3 N° marked single, double & triple prime. 86.144.106.83 10:41, 1 May 2015 (UTC)
for numbers with odd number of digits R2, W2 or Sq2: √x: square root: 10 to 100: √10 to 10: 3.162 to 10: increase: for numbers with even number of digits S: arcsin(x) sine: 0.1 to 1: arcsin(0.1) to arcsin(1.0) 5.74° to 90° increase and decrease (red) also with reverse angles in red for cosine. See S scale in detail image. Sh1: arcsinh(x ...
The prime symbol ′ is commonly used to represent feet (ft), and the double prime ″ is used to represent inches (in). [2] The triple prime ‴, as used in watchmaking, represents a ligne (1 ⁄ 12 of a "French" inch, or pouce, about 2.26 millimetres or 0.089 inches). [3] Primes are also used for angles.
The top left corner has a key called NumLock, or number lock. To use alt key codes for keyboard shortcut symbols you’ll need to have this enabled. If you’re using a laptop, your number pad is ...
The multiplication sign (×), also known as the times sign or the dimension sign, is a mathematical symbol used to denote the operation of multiplication, which results in a product. [ 1 ] The symbol is also used in botany , in botanical hybrid names .
The calculator described above was called "Model No. 1" . [6] Model 2 had scales on the inner cylinder for calculating logs and sines.The "Fuller-Bakewell" model 3 had two scales of angles printed on the inner cylinder to calculate cosine² and sine ⋅ cosine [note 1] for use by engineers and surveyors for tacheometry calculations.
Drew Carey: I like talking to people in the audience.I can crack jokes and… hear somebody's story. It reaffirms my hope for humanity, because everybody in the audience is basically good and they ...