BAIRD & IATLOCK (LONDON) LTD. 



6432 



6432' Abney's Pocket Reflecting Level, with graduated arc, 5 in. long, with draw telescope 

 and improved central fixing clamp to vernier, for the measurement of vertical angles, 

 in leather case 



1 17 



6433 



6433 1 Improved Abney Level, comprising the addition of a magnetic compass on upper side 

 of tube, and on the lower side a circular base upon which the whole rotates, and horizontal 

 angles can be measured, the vertical angles being measured by the arc in the usual way. 

 Complete in case, with staff socket 



2 14 





6434 

 Surveying and Mining Aneroid. Giving readings to single feet of altitude. 



>tout bronzed metal case, silvered metal dial, vernier scale, moved by rackwork motion. 

 Reading lens arranged to traverse the entire circle. Altitude scale'to 6,000 ft. Com- 

 pensated for temperature. In solid leather sling case, 3 in. diameter 

 Same as above, but 5 in. diameter, giving more open divisions 

 Same as above, but 5 in. diameter, with altitude scale to 10,000 feet . 



6435 

 6436 



5 5 

 5 12 



5 17 



