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Unix Version 7 - man page for units (v7 section 1)

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UNITS(1)										 UNITS(1)

       units - conversion program


       Units  converts	quantities  expressed  in various standard scales to their equivalents in
       other scales.  It works interactively in this fashion:

	    You have: inch
	    You want: cm
		 * 2.54000e+00
		 / 3.93701e-01

       A quantity is specified as a multiplicative combination of units optionally preceded by	a
       numeric	multiplier.   Powers are indicated by suffixed positive integers, division by the
       usual sign:

	    You have: 15 pounds force/in2
	    You want: atm
		 * 1.02069e+00
		 / 9.79730e-01

       Units only does multiplicative scale changes.  Thus it can convert Kelvin to Rankine,  but
       not Centigrade to Fahrenheit.  Most familiar units, abbreviations, and metric prefixes are
       recognized, together with a generous leavening of exotica and a few  constants  of  nature

	    pi	 ratio of circumference to diameter
	    c	 speed of light
	    e	 charge on an electron
	    g	 acceleration of gravity
	    force     same as g
	    mole Avogadro's number
	    water     pressure head per unit height of water
	    au	 astronomical unit

       `Pound'	is  a  unit of mass.  Compound names are run together, e.g. `lightyear'.  British
       units that differ from their US counterparts are prefixed thus: `brgallon'.   Currency  is
       denoted `belgiumfranc', `britainpound', ...

       For a complete list of units, `cat /usr/lib/units'.


       Don't base your financial plans on the currency conversions.

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