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Clemens Riefler, Miinchen and Nesselwang. 



VIII, No. 26: The American Stationer, vol. XXIII, No. 7. The 

 Australasian Ironmonger, vol. XXIII, No. 1. Etc. etc. 



The following may be mentioned among the numerous other drawing 

 instruments exhibited by the firm: 



Riefler's Round System Compasses. 



Beam compasses, reducing compasses, bisector, trisector, harmonic 

 divider, angle trisector, protractors of various sizes, with and without 

 verniers, measures, cross ruling appliances etc. 



II. 



The uniformity of movement of our pendulum chronometers depends 

 mainly upon two conditions, viz. upon the accuracy of the escapement 

 and the completeness of the compensation of the pendulum. 



In both respects Mr. Sigmund Riefler, engineer and partner in 

 the firm, has after many years of experimenting succeeded in constructing 

 pendulums which, according to the practical results recorded at the 

 Munic Royal Observatory and elsewhere, constitute a decided progress 

 in chronometry. 



