The National Geographic Magazine, Volume 92National Geographic Society, 1947 - Geography Indexes kept up to date with supplements. |
From inside the book
Results 1-3 of 47
Page 422
... watches in Memorial Hall , Philadelphia , is hairspring , which improved the accuracy of the clock - watch believed to have been made watches so much that within five years they by Peter Henlein and to be the oldest portable were on the ...
... watches in Memorial Hall , Philadelphia , is hairspring , which improved the accuracy of the clock - watch believed to have been made watches so much that within five years they by Peter Henlein and to be the oldest portable were on the ...
Page 427
... watch is is measured down to millionths of an inch by less than 1/3 the diameter of an average another instrument used in watch factories . human hair ( page 407 ) . The standard unit of measure in a watch Temperature Changes Affect Watches ...
... watch is is measured down to millionths of an inch by less than 1/3 the diameter of an average another instrument used in watch factories . human hair ( page 407 ) . The standard unit of measure in a watch Temperature Changes Affect Watches ...
Page 428
... watch . which can cause trouble . Likewise , the alcohol Timing of watches used to be limited to fumes from milady's perfume or toilet water checking the fastest - moving hand on the dial . can be drawn inside in the same way , thinning ...
... watch . which can cause trouble . Likewise , the alcohol Timing of watches used to be limited to fumes from milady's perfume or toilet water checking the fastest - moving hand on the dial . can be drawn inside in the same way , thinning ...
Other editions - View all
Common terms and phrases
Admiral Admiral Byrd Admiral Cruzen American Antarctic Antarctica Anthony Stewart arch Army aurora Bay of Whales Baylor Roberts birds boats building built camp Canyon Cape Capt century Chief clocks Coast color Delhi early earth east eclipse expedition explorers feet field flowers flying forms Frank Hurley garden Geographic Society Kodachrome glacier Hill Indian Island Kertezi Lake land light Little America live look Luis Marden miles Mohawk mountains NATIONAL GEOGRAPHIC MAGAZINE National Geographic Society native névé officer Ottawa Pilgrim plane plants Plate plateau Plymouth polar Pole radio region River rock Ross Sea San Antonio San'a sand ships snow South species Staff Photographer stone summer Texas tion tower town trail trees U. S. Navy United Valley village Volkmar Wentzel walls watch weather wild winter Yemen