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WATCH 



P®P|^5 



Pendant 

 and Bow 

 Patented ^^ 



Waltham Colonial A 



Extremely thin at no sacrifice of accuracy 



Maxitous movement 21 jewels 



Riverside movement 19 jewels 



$150 to $275 or more 



depending: upon the case 



Information to Protect You 

 in Buying a Watch 



THE escapement is the heart of a watch. 

 Just as the heart pumps or pulsates the 

 blood through the human body to main- 

 tain life and energy, so the escapement con- 

 trols the power generated by the mainspring 

 and transfers it into elements of time. 



The Waltham watch escapement controls the power 

 transmitted from the mainspring through the train 

 wheels to the balance wheel, which, in turn, divides th<*. 

 motion into intervals of time, pulsating 18,000 beats per 

 hour — and this pulse beat is recorded on the dial by 

 the hands. 



The escapement consists of the escape wheel, two pallet 

 stones set in the pallet, and a fork, a roller and a roller 

 jewel. The purpose of the pallet and two pallet stones 

 is to stop and release the escape wheel at the end of 

 the train, at equal time intervals of about one-fifth of a 

 second. 



The "Waltham escape wheel has exclusive features. For 

 instance, the most important part of the escape wheel 

 is the impulse surface. In the Waltham watch this im- 

 pulse surface is trued by a diamond-cutting tool, which 

 not only cuts it to absolute exactness, but gives it the 

 high polish required by the Waltham standard of qual- 

 ity at the same time. 



In the foreien-built watch the impu'se surface of the escape wheel 

 is polished with a compound by hand, which invariably charges the 

 surface with cutting pigments that practically defeat the vital reason 

 for polishing, and is, therefore, detrimental to the component mech- 

 anism. 



This is one of the most important and one of the many reasons why 

 you should insist that your watch be a Waltham. 



This story is continued in a leavtiful ' book'el in which you will find a 

 liberal watch education, lent free upon request. 



WALTHAM 



THE WORLD'S WATCH OVER TIME 



'Mention The Geographic — It identifies you" 



