FR696455A - Perfectionnements aux dispositifs utilisés pour apprécier et vérifier la sensibilité et la précision d'appareils indicateurs et de mesure
- Google Patents
Perfectionnements aux dispositifs utilisés pour apprécier et vérifier la sensibilité et la précision d'appareils indicateurs et de mesure
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Sperry Gyroscope Co Ltd
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Sperry Gyroscope Co Ltd
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Publication of FR696455ApublicationCriticalpatent/FR696455A/fr
B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
B61K9/08—Measuring installations for surveying permanent way
B61K9/10—Measuring installations for surveying permanent way for detecting cracks in rails or welds thereof
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR696455D1929-05-271930-05-08Perfectionnements aux dispositifs utilisés pour apprécier et vérifier la sensibilité et la précision d'appareils indicateurs et de mesure
ExpiredFR696455A
(fr)