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MATEU TERMENS MANUEL
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MATEU TERMENS MANUEL
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Application filed by MATEU TERMENS MANUELfiledCriticalMATEU TERMENS MANUEL
Priority to ES0063898UpriorityCriticalpatent/ES63898Y/en
Publication of ES63898UpublicationCriticalpatent/ES63898U/en
Application grantedgrantedCritical
Publication of ES63898YpublicationCriticalpatent/ES63898Y/en
"PERFECTED TELESCOPIC APPARATUS" characterized by the provision on one side end of the tube of the apparatus, of a cylindrical guide support, of the eyepiece holder, which carries on its cylindrical outer surface a spiral coupling groove, on which slides a ball of steel maintained with pressure on the groove by a spring, housed in a hole made in the cylindrical wall of the aforementioned guide support and whose focusing or defocusing movements are determined by the rolling of the ball on the spiral groove, by rotation of the eyepiece holder , when it comes to micrometric focus. (Machine-translation by Google Translate, not legally binding)