Actes du 7ième Congrès International de Photogrammétrie: Actes du 7ième Congrès International de Photogrammétrie

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Multivolume work

Persistent identifier:: 1048858235

Title:: Actes du 7ième Congrès International de Photogrammétrie

Sub title:: Washington, septembre 1952

Year of publication:: 1954

Place of publication:: Amsterdam

Publisher of the original:: Argus [u.a.]

Identifier (digital):: 1048858235

Language:: English

Other Title:: Paralleltitel: Proceedings of the 7th International Congress of Photogrammetry

Corporations:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Adapter:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Founder of work:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Other corporate:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Document type:: Multivolume work

Volume

Persistent identifier:: 104885955X

Title:: Actes du 7ième Congrès International de Photogrammétrie

Sub title:: Proceedings of the 7th International Congress of Photogrammetry

Scope:: circa 800 Seiten in verschiedenen Seitenzählungen

Year of publication:: 1954

Place of publication:: Amsterdam

Publisher of the original:: Argus u.a.

Identifier (digital):: 104885955X

Illustration:: Illustrationen

Signature of the source:: ZS 312(11,2)

Language:: French

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Corporations:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Adapter:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Founder of work:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Other corporate:: International Congress of Photogrammetry, 7., 1952, Washington; American Society of Photogrammetry

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: PROF. GIOVANNI BOAGA [...]: THE "NISTRI" PHOTOSTEREOGRAPH MOD. BETA (1951)

Document type:: Multivolume work

Structure type:: Chapter

The movement of the carriages which obviously produces that of the three spatial components of the marks in the model space, is controlled at distance by hand-wheels which are located on the panel (see fig. 4) and actuate electro-magnetical devices with small torsion, these devices being represented by pairs of synchronous motors (transmitters and re- ceivers). The displacement can be caused by two ways of run: slow and quick. The first, which is even termed « collimating run», is realized by the intermediary of a male and female screw; the second, called « orient- ation run » is realized by the intermediary of pully-and-strap movement. The passage from one speed to the other is controlled at distance. At the same time when the displacement of the carriages having X and Y coordinates takes place, the pencil on the electrocoordinotograph moves on the drawing table, where is thus materialized the plotting from photograms at the ratio between model and drawing set in advance. No possibility of a phase displacement can take place, because a special electrical control device denounces immediately phase displacements bigger than the graphical tolerance for each of either coordinate X and Y, and the intervention of a relais cuts off the current to the electrical motors (receivers at the panel). The wheel for the control of the Z carriage is foot-controlled (see fig. 2) and no receiver at the coordinatograph corresponds to it, since not necessary. The displacements of the three carriages appear on the panel and their amounts can be read on the three corresponding numerators, which are of the re-set type and studied for the zeroing reading: X = 300 mm. (11%/,,7), Y=300 mm. (11 */,6"), Z=420 mm. 47/32). At the side of the numerator for the run of the X, Y carriages appear those for the real displacements of the pencil at the coordinatograph; therefore the ratio between the two readings of the same coordinate gives the ratio of similitude between model and drawing. In order to change this ratio of similitude it is sufficient to change the gear boxes both at the pencil bearing electrocoordinatograph and at the panel between receiving motor and the numerator, so that the indica- tions of the numerator at the panel remain always identical to those of the numerator at the coordinatograph. At will, one can also by an obvious proceeding, invert the movement of one of the two axes at the drawing table: the resulting cartography will be thus inverted with respect to the projection of the optical model. The execution of a profile (or section) according to a plane X-Z or Y-Z is made by the simple change of the electric axes, which thing can be obtained by permuting the respective plugs. 19

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