MLTHAM 

 THE 



IENTIF- 1 



LI 



HILT 

 WATCH 



THE 

 TOREK 

 BUILT 

 WATCH 



The Vanguard 



The World's Finest Railroad Watch 



23 jewels 



$66 and up 



To Instruct and Protect You in 

 Buying Your Watch 



WE are all subject to temperature. There is a 

 physical response to heat or cold. There 

 is an expansion or contraction of the body's 

 tissues which produces a distinct feeling. Thus we 

 say, "The heat is 'melting' me" or "The cold is 

 * shriveling ' me." 

 The balance wheel of a watch automatically allows for the 

 difference in temperature that your watch may be subject 

 to. In fact, the balance wheel is to a watch what a pendu- 

 lum is to a clock — an automatic governor. 

 Owing to the expansion and contraction of metal, which, 

 under heat or cold, would increase or decrease the diam- 

 eter of the balance wheel, thereby affecting the number 

 of time-keeping vibrations per second, the Waltham bal- 

 ance wheel is made of specially treated steel and brass, fused 

 together and rolled under high pressure to produce the 

 necessary temper after fusing. 



Thus the Waltham balance wheel responds to varying heat or cold more 

 readily than the balance in the foreign built watch, which is apt to be 

 too soft and lacking in temper to keep perfect time or to be easily repaired. 

 In the making of this standardized Waltham balance wheel there are 

 thirteen master stages and about six hundred detail operations. 

 The foreign watch balance wheel lacks the standardized uniformity in the 

 fusing and rolling of the metals, so necessary to the time-keeping perform- 

 ance of the watch, which cart only be produced by the specialized ma- 

 chinery developed at the Waltham shops. 



One of the many reasons why the world's leading horologists came to 

 Waltham for time was because they appreciated these scientific facts in 

 Waltham standardization. 



When you purchase a Waltham watch its time-keeping qualities will not 

 vary With heat or cold. It is a watch that is " governed " in this respect 

 by the last word in correct metallurgy to give its balance wheel a perfect 

 performance. 



This is one more scientific reason why your watch selection should be a 

 Waltham. 



This story is continued in a beautiful booklet in which you will find a liberal 

 watch education. Sent free upon request. IValtham Watch Co., Waltham, Mass. 



WALTHAM 



THE WORLD'S WATCH OVER TIME 



'Mention The Geographic — It identifies you" 



