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2 definitions found
 for Isometrical perspective
From The Collaborative International Dictionary of English v.0.48 :

  Isometric \I`so*met"ric\, Isometrical \I`so*met"ric*al\, a.
     [Iso- + Gr. me`tron measure.]
     1. Pertaining to, or characterized by, equality of measure.
        [1913 Webster]
     2. (Crystallog.) Noting, or conforming to, that system of
        crystallization in which the three axes are of equal
        length and at right angles to each other; monometric;
        regular; cubic. Cf. Crystallization.
        [1913 Webster]
     3. Of or pertaining to isometrics.
     Isometric lines (Thermodynamics), lines representing in a
        diagram the relations of pressure and temperature in a
        gas, when the volume remains constant.
     Isometrical perspective. See under Perspective.
     Isometrical projection, a species of orthographic
        projection, in which but a single plane of projection is
        used. It is so named from the fact that the projections of
        three equal lines, parallel respectively to three
        rectangular axes, are equal to one another. This kind of
        projection is principally used in delineating buildings or
        machinery, in which the principal lines are parallel to
        three rectangular axes, and the principal planes are
        parallel to three rectangular planes passing through the
        three axes.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Perspective \Per*spec"tive\, n. [F. perspective, fr. perspectif:
     cf. It. perspettiva. See Perspective, a.]
     1. A glass through which objects are viewed. [Obs.] "Not a
        perspective, but a mirror." --Sir T. Browne.
        [1913 Webster]
     2. That which is seen through an opening; a view; a vista.
        "The perspective of life." --Goldsmith.
        [1913 Webster]
     3. The effect of distance upon the appearance of objects, by
        means of which the eye recognizes them as being at a more
        or less measurable distance. Hence, a["e]rial perspective,
        the assumed greater vagueness or uncertainty of outline in
        distant objects.
        [1913 Webster]
              A["e]rial perspective is the expression of space by
              any means whatsoever, sharpness of edge, vividness
              of color, etc.                        --Ruskin.
        [1913 Webster]
     4. The art and the science of so delineating objects that
        they shall seem to grow smaller as they recede from the
        eye; -- called also linear perspective.
        [1913 Webster]
     5. A drawing in linear perspective.
        [1913 Webster]
     Isometrical perspective, an inaccurate term for a
        mechanical way of representing objects in the direction of
        the diagonal of a cube.
     Perspective glass, a telescope which shows objects in the
        right position.
        [1913 Webster]

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