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Priority to ES0157538UpriorityCriticalpatent/ES157538U/en
Publication of ES157538UpublicationCriticalpatent/ES157538U/en
Telescopic calculation rule for construction in general, which is characterized by two tubular bodies or bars, one of larger diameter where it slides and accommodates another counterpart body; the first of them, near its extremity, includes a cylindrical box where a screw is housed that at its end welcomes and holds the complementary body and smaller diameter than the effect by its internal end has a central hole with thread pitch; Said screw, between the head of the box that comprises it and the end stop of the coupling tube, has a compression spring. (Machine-translation by Google Translate, not legally binding)
ES0157538U1970-04-101970-04-10Telescopic calculation rule for construction in general (Machine-translation by Google Translate, not legally binding)
PendingES157538U
(en)