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



417 



No. 11040. 



No. 11044. 



No. 11048. 



No. 11054. 



11032. PUMP, Little Giant Lift, and Force, for keeping the laboratory plumbing clean. Will clean and 

 open any clogged waste pipe without removing connections. Works by vacuum and pressure, 

 and will break up any solid waste or obstruction caused by chemical action in a few minutes. 

 The pump is made of heavy brass with attachments of pure rubber. The cup is of steel, is 

 non-collapsible and is of sufficient size to permit its use over 4-inch screen drains. An adjust- 

 able washer is furnished for use where the other cup will not fit 86.00 



11040. PUNCHES, hollow cast steel. 



Hole diameter, inches % % % % 



Each 15 .20 .30 .35 



11042. PUNCH, spring, cast steel, double joint; for leather, etc. Length, 714 inches .50 



11044. PUNCH, Paper, Samson, The most powerful hand punch made; will perforate anything from 



a thin sheet of steel to ^4-inch paper. Nickel-plated and fitted with $i 6 -ineh die 2.50 



PURINOMETER, see Urine Analysis Apparatus. 



11048. PYCNOMZTEB. Drushel, as used by the Bureau of Mines for measuring the specific gravity 

 of small quantities of light petroleum distillates. (See Bulletin 125 of the United States 



Bureau of Mines) 1-00 



For other PYCNOMETERS, see Specific Gravity Bottles. 



PYROMETERS 



11054. PYROMETERS. Brown Expansion, operating through the difference in expansion of graphite 

 rods and the steel stem enclosing them. A compensating device corrects for differences in the 

 amount of stem immersed above 12 inches. The graduated dial is of porcelain, 6% inches in 

 diameter, and is not affected by heat or gases. Furnished with a 36-inch stem which should 

 be inserted in the heat up to 12 inches or more. 



No A B C 



Graduated to, degrees F 800 1200 1500 



Each 16.50 22.00 27.50 



Note: Pyrometers No. 11054 can be furnished with dial graduated in corresponding Centigrade 

 ranges "if desired without additional charge. They may also be obtained with dial set for 

 horizontal use of stem. 



11058. PYROMETERS, Brown High Resistance, Portable Type, for use with either base metal or plati- 

 num thermo-couples. The scale is 5 inches long with mirror for accurate reading. A locking 

 device is provided which automatically locks the pointer when the case is closed, preventing 

 damage in handling or shipment. The instrument has a resistance of 600 ohms and its read- 

 ings are independent of the length of lead wires. Complete with 15 feet double-conductor 

 \vire. in polished hardwood case with hinged cover, without thermo-couple. 



No A B C D E F G H J 



Bange to derees F. 800 1000 1200 1600 1800 2000 2400 2600 3000 

 Graduated to. deg. F. 5 10 10 10 20 20 20 20 25 



Each 82.50 82.50 82.50 82.50 82.50 82.50 82.50 82.50 82.50 



(For illustration of No. 11058, see next page.) 



