BAIRD &TATLOCK: (LONDON) LTD. 



'Vf*i*' r > i 



Registered No. 592,988 Section of Viscometer. 



5007 5007 



5007 T Sir Boverton Redwood's Standard Viscometer, Admiralty pattern for testing oil fuel. 



The apparatus consists of a silvered brass oil-cylinder, fitted at base with an agate jet of standard bore. 

 This agate jet is encased in a stout brass tube which is screwed at end and fits into the centre of outer vessel 

 The outer vessel is of spun copper, lined on the outside with oak, and fits on to brass levelling stand. Two low 

 temperature thermometers graduated 0-70 F., ball valve for closing agate jet, 50 c.c. flask, etc., as illustrated. 



Price complete, with thermometers, flask, etc., as illustrated, and certificate of verification 

 by Mr. A. G. Berry, chief assistant to Sir Boverton Redwood 



DIRECTIONS FOR USE. 



The outer vessel or bath is packed with broken ice to a height roughly corresponding with that of the gauge- 

 point in the oil-cup. 



The oil to be tested must be free from water, dirt, and matter in suspension, and should be maintained at a 

 temperature of 32 F. for at least six hours immediately before it is tested. 



The thermometer is supported in the oil-cup by means of the clip; so that its bulb rests on the bottom of the 

 cup, and in such a position that the flow of oil from the orifice will not be interfered with. 



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ICHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS. 



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