ES18809U - Apparatus to determine the points of step of the contour lines on tachymetric planes. (Machine-translation by Google Translate, not legally binding)
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Apparatus to determine the points of step of the contour lines on tachymetric planes. (Machine-translation by Google Translate, not legally binding)
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An apparatus to determine the points of step of the contour lines on tachymetric planes, composed of two graduated rules united by its left end in the form of a compass, a graduated rule housed in each of said rules with inverted graduation with the corresponding rule and a third reglilla without graduation that rotates on one of said reglillas. (Machine-translation by Google Translate, not legally binding)
ES0018809U1948-07-311948-07-31
Apparatus to determine the points of passage of the contour lines on tachymetric planes.
ExpiredES18809Y
(en)