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OPERATING MANUAL FIELD EXPERIENCE An operating • manual is furnis«d giving fully de­tailed and illustrated instructions for making every sort of pipe and cablelsurvey. A copy of this manual will be gladly mailed upon request to furnish more detailed information than can be included here. CONTROL MARKERS Each: of the .'simple controls5 on the instrument is plainly identified by special markers. These tig jin with the operating instructions s|| that the unskilled operator can readily use the. locator. Goldak utility instruments are engineered to the highest technical standards, and designed for reliable long life performance. They have achieved universal acceptance for a period of over 15 years operating and manufacturing experience. In these post-war times customers will have the right to demand of manufactures only products of tech­nical excellence. Goldak's personnel and plant stand ever alert to meet the problems of scientific advance­ment in the general electronic field. New demands for exacting quality will assure the users of Goldak equip­ment superiority over any other kind. PROGRESS IN ELECTRONICS The tube at the left is a Mode, of some |®yeqr-qid vintage, but still found in locators of competitive manu­facture. Until the end of the war Goldak used the GT type shewn at center. Goldak locators have been developed and. improved throuah close cooperation with large and small util­ities: throughout the country. One of these companies] now operates some 400 Goldaks. Others use one or two or up to many dozen. We mean every word of our guarantee/of superior­ity. Inspection of Goldak equipment will prove the comparative excellence of construction and materials while actual test leaves no; doubt of a wide margin of superiority in performance. 5 Goldak nms.truments are, often imitated but never ex­celled. We invitefand welcome the .most critical in­spection and comparison. GUARANTEE Goldak instruments are fully guaranteed to out-perform any similar competing device. Present Goldak instrumeigsUse the nesf Miniature type shown at the right. This is trie type o: tube which performed sd amazingly in various'wcrld War H miSS tary devices. STANDARD BATTERIES AND TUBES Dry batteries of the plug-in type are changed quickly and conveniently. No chance for wrong connection. Tubes arc of the latest miniature type insuring high­est Electronic efficiency and lowest battery drain. PATENT PROTECTION These locators are manufactured under Goldak pat­ent 2,160,356 and are licensed by Western Electric Co. This insures the esse of the latest and most advanced electronic circuits. THE GOLDAK COMPANY 1544 WEST GLENOAKS BLVD. GLENDALE 1. CALIFORNIA