CENTRAL SCIENTIFIC CO., CHICAGO, TJ. S. A, 



499 



No. 13712. 



No. 13716. 



No. 13720. 



13678. THERMOMETER, Recording (Thermograph). Same as No. 13676, but with charts from 20 to 

 120F $50.00 



13680. THERMOMETER, Recording (Thermograph). Same as No. 13676, but with unflgured charts for 



a range of 100F. in 2 divisions 50.00 



13681. THERMOGRAPH CHARTS, to 100F., for use with No. 13676. In boxes containing a year's 



supply Per box 2.00 



13682. THERMOGRAPH CHARTS, 20 to 120F., for use with No. 13678. In boxes containing a year's 



supply Per box 2.00 



13683. THERMOGRAPH CHARTS, Unfigured, for use with No. 13680. Range, 100F. in 2 divisions. 



In boxes containing a year's supply Per box 2.00 



13689. THERMOGRAPH CHARTS, for use with old style imported high drum thermographs. Style No. 

 46. Range 62 to +128F. In boxes containing a year 'a supply Per box 2.25 



13691. THERMOGRAPH CHARTS, for use with old style imported low drum thermographs. Style No. 

 37. Range to 100F. In boxes containing a year's supply Per box" 2.50 



13697. BARO-THERMOGRAPH CHARTS, Style No. 20. In boxes containing one year's supply. 



." Per box 3.00 



13710. THERMOMETER, Soil, Standard Grade, magnifying tube, mercury-filled, mounted on 15 inch 

 turned mahogany frame with oxidized brass scale, and with pointed metal end. Range, -30 

 to 180 F ! 2.30 



13712. THERMOMETERS, Soil, as used by the New York Agricultural Experiment Station. With solid 

 stem engraved scale thermometer mounted in turned wood case with upper part cut away to 

 expose 10 inches of the scale from about 20 to 120 F. Both ends are protected by metal 

 ferrules. J 



No A B C 



For use at depth, inches 12 24 36 



Each 9.00 9.50 12.50 



13716. THERMOMETER, Three Scale, boxwood, F., B. and C. scales 80 



13720. THERMOMETER, Weather Bureau Standard, 12 inch, cylindrical bulb, graduation etched on 

 tube. The tube is mounted on an aluminum scale on which is marked every 5 degree line of 

 the scale, and the figures every 10 degrees. Has brass insulating support and binding screws. 

 Approximate range, -30 to 120^. With manufacturer's certificate 6.00 



13724. THERMOMETER, Window, for weather observations, with magnifying tube, alcohol filled, 

 mounted on nickel-plated metal back, with brackets for attachment to window frame. Length, 

 10 inches; approximate range, 40 to 120F 1.20 



13728. THERMOMETER, Wood Frame, with solid stem, engraved scale thermometer. Floats hori- 

 zontally in liquids. No metal to corrode. Length, 12 inches; range, about -20 to 120 F. .80 



