Clemens Riefler, Miinchen and Nesselwang. 65 



central regulating- systems the warranted accuracy is 2 seconds 

 per week. 



In the case of Riefler's No. 1 astronomical chronometer fitted up 

 at the Munich observatory the coefficient of compensation of the pendulum 

 for 1 C. is 0,0008 second per diem and the mean error of the movement 

 is 1 second per month. 



Detailed descriptions and recorded results may be had on ap- 

 plication. 



III. 



The firm was established in 1841 and possesses 4 establishments 

 worked by 2 turbines and 2 water wheels of an aggregate power of 

 40 HP. 



The manufacture exceeds per annum 30000 compasses and 60000 

 other instruments. Export extends over all civilized countries. The com- 

 mencement of export to the United States dates 35 years back. 



The firm received first prizes at 10 International and 11 National 

 exhibitions (1892 highest award at Paris, viz. the Diplome d'honneur). 



Agent of the firm in the U. S.: Messrs F. Weber & Co., 

 1125 Chestnut Str., Philadelphia. 



