BAIRD &.X\TLOCK (LONDON) LTD. 



2931-2937 



A2937 



Dial Indicator Taps for use with all-draught furnace. 



These taps are made throughout in brass, have a full bore in the plug and barrel, and are fitted with screw 

 on ; they are strongly recommended for use in connection with a gas governor, where exact regulation of 

 emperature is absolutely necessary to successful results being obtained with the furnace. 



The brass dial is calibrated so as to enable the operator, by taking note of the gas pressure and position of the 

 nter on the dial, to practically repeat at will any required method of firing the furnace. 



1 Size of tap, iron threads J-in. 



!932 ., |-in 



1933 .. |-in. 



:934 x-in 



; 935 ,, ., ,, ij-in. 



; 936 ii-in. 



937 2-in 



2937 Muffle Furnace (draught), for assaying, :namelling, etc. 



This furnace is the most economical and practical draught muffle furnace ever placed on the market. It is 

 instructed with firebrick body, surrounded with non-conducting material, and fitted into a strong cast-iron 

 ising, the finest material and workmanship obtainable being used in its manufacture, while the finish and appear- 

 mce will allow of its being placed in the best-appointed studios. 



Each furnace is fitted with muffle of pure fused silica. Price with silica muffle . . . . 6 



Clear working space inside muffle, width 4-in., height 3-in., depth y-in. (102 x 77 x 178 mm.) 



083 

 089 

 10 9 

 15 

 150 

 1 13 6 

 300 



5 



