OF METEOKOLOGICAL INSTRUMENTS. 



35 



FIG. 102. 



FIG. 124. 



113. ANEROID BAEOMETEB, with revolving index to about 8000 feet . 300 



114. Aneroid Barometer, rather smaller in size, and carefully compensated 3 10 



115. ANEEOID BAEOMETEE, with scale of heights . . . 4 10 



116. Aneroid Barometer, with circular thermometer and raised barometric circle, 



carefully compensated for measuring up to 10,000 to 12,000 feet 4 10 



117. ANEEOID BAEOMETEE, pocket size, in neat case, about 2 inches by 1, carefully 



compensated for temperature, with superior compass and thermometer ; an 

 excellent traveller's companion . . . . 4 10 



118. Alpine Aneroid Barometer, very carefully compensated and tested for measur- 



ing heights up to 15,000 feet (small pocket size) . . 5 10 



If in silver . . . . . . . 660 



119. Aneroid Barometer, with extra small dial, about the size of a small Geneva 



watch, carefully tested and compensated, with every improvement, graduated 

 from about 23 to 31 inches, or more if desired (fig. 119, p. 33) 500 



120. ANEEOID BAEOMETEE, same size, in silver, with double back to open with 



spring (Jig. 120, p. 34) . . . . . 660 



If on neat gilt watch stand (fig. 120*, p. 34), 10s. 6d. extra. 



122. Aneroid Barometer, in best gold, 18 carat . . . 12 



N.B. A scale of altitudes accompanies any of the above instruments gratis, or may be 

 engraved on the dial of either, from No. 108, at an extra charge of 7s. 6d. 



* # * The larger sized aneroids, as 4% inch., can have self -registering indices added, by which 

 the highest and lowest point during absence may be registered at, extra . . 110 



123. Sympiesometer (CASELLA'S IMPEOVED) for measuring mountain heights up to 15 to 



21,000 leet, as adopted i>y some of the leading members of the Alpine Club, in 

 neat mahogany case with straps .... 4 



For other Simpiesometers, see Nos. 142, 143, and 144. 

 BEGISTEEING ANEEOIDS, BAEOMETEES, ETC., see Nos. 17 to 22 inclusive. 



D 2 



