2. (Math.) Sexagesimal, or made on the scale of 60; as,
logistic, or sexagesimal, arithmetic.
{Logistic}, or {Proportional}, {logarithms}, certain
logarithmic numbers used to shorten the calculation of the
fourth term of a proportion of which one of the terms is a
given constant quantity, commonly one hour, while the
other terms are expressed in minutes and seconds; -- not
now used.
2. (Chem.) The combining weight or equivalent of an element.
[Obs.]
2. Relating to, or securing, proportion. --Hutton.
3. (Math.) Constituting a proportion; having the same, or a
constant, ratio; as, proportional quantities; momentum is
proportional to quantity of matter.
{Proportional logarithms}, logistic logarithms. See under
{Logistic}.
{Proportional scale}, a scale on which are marked parts
proportional to the logarithms of the natural numbers; a
logarithmic scale.
{Proportional} {scales, compasses, dividers}, etc.
(Draughting), instruments used in making copies of
drawings, or drawings of objects, on an enlarged or
reduced scale.
Note: The compasses for drawing circles have adjustable pen
points, pencil points, etc.; those used for measuring
without adjustable points are generally called
dividers. See {Dividers}.
{Bow compasses}. See {Bow-compass}.
{Caliber compasses}, {Caliper compasses}. See {Calipers}.
{Proportional}, {Triangular}, etc., {compasses}. See under
{Proportional}, etc.