376 



Equilibrium of Gases. 



No. 52 797 



52 802. 1 : 3. 



52 804. 1 : 2. 



52810. 1 : 12. 



52.797. Levelling Barometer, after Goldschmidt, Figure, for altitudes to 5000 m, accurate t 

 to approximately 2 m. with comparison table and thermometer, in case with carrying 

 straps 5. 



52.798. - - idem, accurate to approx. 1m 



52.799. Altitudinal Barometer, Figure, with rotary scale, for altitudes from to 2500 in 1 



52.800. - - idem, finest construction, compensated and gilt, Figure, in case, to 5000 m 



52.801. - - i d e m, with compass on back :<. 



52.802. Altitudinal Barometer, Compass and Thermometer, in case, Figure 2. 



52.803. -- idem, smaller, watch-pocket form and finest construction 4. 



52.804. Aneroid Barometer, Figure, simple, in metal ease, with open mechanism of 9 em 



scale diameter 0. 



52.,sor>. Good Round Pattern Barometers, in metal ease or in wood frame. Price according to 



to construction i 0. 15. 1. 



When ordering kindly state prin . 



I 'I. S74, S7.-I, JT0, -7 

 877, 878, 884. 



0. 

 10. 

 10. 

 15. 

 Ki. , 

 10. 



0.0 



10. 



15. 



