at aero-photogrammetry but possible at terrestrial survey
(caused by dense vegetation, camouflage etc.), Spelaeology,
geological resources, which are not aero-visible etc.: here a
sketchy interpretation of a Copy would show how additional
photograms are necessary to fill the gap of the photogramme-
tric cover and which can be completed on the spot quickly,
cheaply and rationally.
After return, gaps in the recording are only completable by an
enormous additional expenditure (further missions of producing
photograms) or considerable depreciation of the results.
Such an emergency plotter represents an optimal plotter which
can increase the interpretation values by little, clarifying
measurements. Certain users, especially at the non-topogmphi-
cal photogrammetry, would often be satisfied by the precision
Of rough measurements if the photogrammetric restitution are
more promptly available as they used to. This is the case at
€.8. gradual changements of models at automobile body-construc-
tion, aerodynamics, designs at the integration of shapes in
the existing objects for artistic needs, deformation measure-
ments etc.
Concerning the preservation of monuments, this would be the
case if additions within the original object to be surveyed
Will be necessary and if different shape variations should be
considered, forms of elements have to be changed or integrated
in the existing forms according to the proportions.
The small plotter must therefore lead to a more extensive
acceleration and flexibility of the plot as it is the case
with the usual instruments.
At proportion-studies, at the standard examination of several
existing inventory forms with regard to key-measurements such
as the assignment of objects to the well-known, historical
locally and temporally different methods of determinating the
design of arches, arch Segment derivations of three or more
centred arches, tressing of perpendicular lines e.g. with
rulers and compasses, ogives and tracery combinations, methods
of vault design derivations in accordance with the principal
arch construction method and the one based on a sphare etc.,
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