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



437 



_ 



No. 13324. 



No. 13326. 



No. 

 13332. 



No. No. No. No. No. No. 

 13346. 13360. 13352.13354.13358.13360. 



13324. TAPES, MEASURING, Steel, English and Metric, German silver case with spring wind and stop. 

 Tape Vi inch wide (5 meter, ^ 6 inch), graduated in millimeters and 16ths of inches. 



Length, meters 1 2 5 



Each $1.00 1.50 4.50 



13326. TAPE, Steel, Diameter Measuring, giving directly the diameter of a circular object when its 

 circumference is measured. In metal lined, hard leather case with nickel-plated trimmings, 

 with folding flush handle opened by pressing upon a pin on opposite side. The tape is of 

 steel % inch in width and 50 feet long, graduated on one side in feet, tenths, and hundredths, 

 and on the other side in diameters (inches and tenths of inches). Fitted with a special peg 



or spike for fastening to tree or other object to be measured 7.00 



TAPERS, Wax, see Wax Tapers. 



TAR TESTER, see Asphalt and Tar Testing Apparatus. 

 13332. TEST GLASSES, conical form, with lip, for sedimentation. 



Capacity, cc 30 60 125 175 250 



Each..' - .50 .50 .60 .80 .90 



TEST PAPER, see Paper. 



TEST TUBES, ALL KINDS 



13346. TEST TUBES, Thin Wall, ordinary glass, with lip, well annealed, free from lead, for chemical 

 use. 



Xo A B C D E F G H J 



Length, inches 345566678 



Diameter, inches.... %%%%%% 1% 1 



Per dozen 17 .20 .22 .24 .25 .27 .40 .45 .55 



Per gross 1.65 1.85 2.10 2.20 2.40 2.60 3.90 4.40 5.40 



13350. TEST TUBES, Thin Wall, ordinary glass, with lip, on foot. 



No A B C D 



Length, inches 4 6 8 



Diameter, inches % % % 1 



Each 07 .12 .15 .26 



Per dozen 65 1.20 1.50 2.60 



13352. TEST TUBES, Thin Wall, ordinary glass, with lip, with side arm. 



Xo A B C 



Length, inches 5 6 8 



Diameter, inches % % 1 



Each 13 .15 .18 



Per dozen 1.30 1.50 1.80 



13354. TEST TUBES, Thin Wall, ordinary glass, with lip, graduated. 



Capacity, cc 5 10 20 25 



Graduated to, cc Mo Mo % % 



Each . .25 .30 .42 .50 



K 

 10 

 1 



.75 

 7.25 



L 

 12 



1 



1.38 

 13.80 



E 

 10 

 1 



.40 

 3.90 



D 

 10 

 1 



.24 

 2.35 



30 



% 

 .55 



13358. TEST TUBES, Thick Wall, ordinary glass, without lip, culture tubes for bacteriological work, 

 so-called Board of Health tubes. 



No A B C . D E 



Length, inches 



Diameter, inches % % '- % 



Per dozen 30 .35 .40 .45 .85 



Per gross 2.80 3.10 3.60 3.90 8.20 



13360. TEST TUBES, Thick Wall, ordinary glass, without lip, flat bottomed, so-called specimen tubes. 



No A B C 



Length, inches 4 



Diameter, inches % % % 



Per dozen 35 .40 .45 



Per gross 3.10 3.60 3.90 



