372 



A. DAIGGER & COMPANY, CHICAGO, U. S. A. 



THERMO REGULATORS 



6450 



6458 



6460 



6462 



6456 Muencke's Improved Thermo-Regulator for low pressure only. In this 

 regulator a stopcock controls the passage of gas through the horizontal 

 tube to the reserve flame. When the temperature rises the gas supply 

 is reduced by the mercury closing the passage at the fork $7.50 



6458 Reichert's Thermo-Regulator, improved form with stopcocks to prevent 



extinguishing the flame 5.00 



6460 Dunham's Thermo-Regulator. This is an extremely sensitive regulator in 

 which the sensitiveness is derived from a large alcohol bulb. The 

 minute changes in the volume of the alcohol as caused by the varia- 

 tions in temperature act upon a U-shaped column of mercury and 

 control the volume of gas which passes through" the tubes Adjust- 

 ments for the different temperatures to be maintained are made by 

 sliding the gas inlet tube upward or downward as required. The 

 thermostat is furnished complete with liquid and mercury for rilling. 

 A set of directions for use is supplied with each instrument 5.00 



6460a Glass Parts only for Dunham's Thermo-Regulator 3.00 



6462 Reichert's Thermo-Regulator for high temperatures 4.25 



6462a Reichert's Thermo-Regulator for low temperatures 4.25 



6462b Reicherfs Thermo-Regulator, short form for water baths 4.25 



6464 



6i64 Reichert-Novy's Thermo-Regulator. This is an improved form for high 

 or low temperatures and the regulator may be adjusted so that the 

 maximum flow of gas, which is ample for high temperatures, may be 

 reduced to an amount just sufficient to keep the flame from going out. 

 When used in connection with the gas pressure regulator, Merrill's, it 

 will be found to work to the greatest satisfaction $10.00 



See, also, Gass Pressure Regulators. 



