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CENTRAL SCIENTIFIC CO., CHICAGO, U. 8. A. 



No. 13190. 



SURVEYING INSTRUMENTS, SIMPLE TYPE 



For Forestry, Mining 1 and Geological Work. 



BAROMETERS, see general heading Barometers. 



13182. CLINOMETER, Abney's Reflecting Level or Pocket Altimeter, for measuring the height of 

 buildings, trees, hills, etc., and also for fixing the slopes for railroads, the rise and fall of 

 ground for drainage purposes, and all operations where angular distance or inclination of 

 surface is desired. Sighting tube 5 inches long, large German silver arc, extra long draw 

 eye-piece, improved fixing clamp to vernier. The arc has two graduated scales upon it, one 

 giving the angular measurements by degrees, and subdivided to 5 minutes by the vernier 

 divisions on the index. The other scale is figured 1 to 10 with their subdivisions. Com- 

 plete in leather case, with directions $13.50 



F2625. COMPASS, Sight, watch case form, 50 mm diameter, with raised dial and full circle divisions. 

 Bar needle, 30 mm long, with agate cap. Sights and spring cover 11.50 



13190. COMPASS, Surveying, Brunton Patented Pocket Transit, for surface and underground survey- 

 ing in mining and geological work. Case is of aluminum 2%x2%xl inch. Weight, 8 

 ounces 25.00 



13202. LEVEL, Hand, Reflecting, for measuring slopes and gentle elevations, 

 bronzed tube with level, cross-hair, and fixed eye-piece; length, 5 

 ounces 



Consists of a square 



inches; weight, 2% 



4.00 



