National Geographic : 1919 Jun
WALTHM THE SCIENTI ICALLT AND THE FOREIGN BUILT WATCH nm~testscew Know These Facts Before in theword You Buy a Watch Waltham 71// Ligne The movement is actually smaller than a dime in diameter $150 to $1,000 or more depending upon the case THERE are turning operations upon metal made by Waltham machinery that are so minute, so wondrous in their deli cacy, so exacting in precision, that the mind is amazed at these triumphs of American skill in watchmaking. Imagine a machine turning out by the many thou sands, screws so small that the naked human eye sees them as points of metal shining under reflected light - screws that measure 254 threads to the inch, and you can put 47,000 of them in a small thimble ! Screws that are hardened and tempered, each one polished on the top - screws that are perfect in sphericity, perfect in thread, perfect for their place in the mechanism of that ladies' Waltham watch movement, which, when completed, is actually smaller in diameter than a dime -a ten cent piece! The screws in the foreign made watch are made by hand. But comparing them under the magnifying glass we see the difference between these hand-made screws and the Waltham machine-made product. The foreign screw varies - the Wal tham screw is standardized in size and perfection of work manship. No human hand could ever match the quantity and quality performance of machinery that creates such miracles as these. This is one more of the many reasons why the world's leading horologists came to Waltham for time, and still another reason why your selection should emphatically be a WALTH AM THE WORLD'S WATCH OVER TIME "Mention The Geographic-It identifies you"