314 CENTEAL SCIENTIFIC CO., CHICAGO, U. 8. A. 



No. 7754. 



7744. HYDROMETER, Condensed Milk, Baume Scale, highest quality, graduated from to 15 in 

 l^o" divisions. Length, about 11 inches $2.50 



7746. HYDROMETER, Condensed Milk, Specific Gravity Scale, highest quality, graduated from 1.040 

 to 1.080 in 0.001 divisions, for use at 142F. Length, 9 inches 2.50 



7750. HYDROMETERS, Oil Testing, Baume Scale, 4 ounce size, highest quality, with enclosed ther- 



mometer, with scale at bottom reading from 20 to 120F., for use in 4 ounce sample bottles 

 or small test jar. Length, about 7 inches. Graduated in 1 divisions to read correct gravity 

 at 60F. 



No / A B 



Range, degrees BaumS 10-50 40-90 



Each 5.00 5.00 



7751. HYDROMETERS, Oil Testing, Baume Scale, 4 ounce size, same as No. 7750, but plain, without 



enclosed thermometer. 



No A B 



Eange, degrees Baume 10-45 45-90 



Each 2.50 2.50 



7752. HYDROMETERS, Oil Testing, Baume Scale, 4 ounce size, same as No. 7750, but with smaller 



ranges and finer divisions for very accurate readings when small samples only are available. 



Graduated in i divisions. 



No A B C D E F G H 



Eange, degrees Baumei 10-21 19-31 29-41 39-51 49-61 59-71 69-81 79-91 

 Each 5.60 5.60 5.60 5.60 5.60 5.60 5.60 5.60 



7753. HYDROMETERS, Oil Testing, Baume Scale, 4 ounce size, same as No. 7752, but plain, without 



enclosed thermometer. 



No A B C D E F G H 



Bange, degrees Baumei 10-21 19-31 29-41 39-51 49-61 59-71 69-81 79-91 



Each 2.35 2.35 2.35 2.35 2.35 2.35 2.35 2.35 



7754. HYDROMETER POCKET CARRYING CASE, of nickel-plated metal, for 4-ounce hydrometer. 



Complete with hydrometer jar and flannel cover for hydrometer 85 



7756. HYDROMETERS, Oil Testing, Baume Scale, regular size, highest quality, with enclosed ther- 



mometer, with scale at bottom reading from 20 to 120F., for use in 12 or 15-inch hydro- 

 meter jars. Length, about 14 inches. Graduated to read correct gravity at 60F. 



No A B C 



Eange, degrees Baume; 10-100 10-45 45-90 



Graduated to, degrees 1 % % 



Each 5.30 5.00 5.00 



7757. HYDROMETERS. Oil Testing, Baume Scale, regular size, same as No. 7756, but plain, without 



enclosed thermometer. 



No A B C 



Eange, degrees Baume 10-100 10-45 45-90 



Graduated to, degrees 1 % \b 



Each 2.75 2.75 2.75 



7758. HYDROMETERS, Oil Testing, Baume Scale, regular size, same as No. 7756, but with smaller 



ranges and finer divisions for more accurate readings. Graduated in 1 / 4 divisions. 



No A B C D 



Eange, degrees Baume 10-40 30-60 50-80 70-100 



Each 5.60 5.60 5.60 5.60 



7759. HYDROMETERS, Oil Testing, Baume Scale, regular size, same as No. 7758, but plain, without 



enclosed thermometer. 



No A B C D 



Eange, degrees Baume 10-40 30-60 50-80 70-100 



Each 2.35 2.35 2.35 2.35 



7760. HYDROMETERS, Oil Testing, Baume Scale, regular size, same as No. 7756, but with smaller 



ranges and very fine divisions for use when greatest accuracy is required. Graduated in i/J 

 divisions. 



No A B C D E F G H 



Range, degrees Baumei 10-21 19-31 29-41 39-51 49-61 59-71 69-81 79-91 



Each 6.10 6.10 6.10 6.10 6.10 6.10 6.10 6.10 



7766. HYDROMETER, Salt Salometer, highest quality, graduated from to 100 in 1 divisions for 



use at 60"F. Length, about 11 inches 1.65 



7768. HYDROMETER, Salt Salometer, medium grade, graduated from to 100 in 1 divisions. 



Length, about 1 1 inches 50 



HYDROMETER, Silver Solution, see Hydrometers, Actinometer Scale. 



