

BAIRD &.TATLOCK (LONDON) LTD. 



Fig. i. Practical Pyrometer, Wall Type Outfit. 



About one-tenth full size. 





The Indicator has Patent Spring-mounted Jewels, and is provided with a 

 Red Adjustable Index (shown at 650), by which the user can see from a distance 

 if the desired temperature is maintained. 



PRACTICAL PYROMETERS. 



INTRODUCTORY. 



The great success attending the introduction of instruments " designed by an engineer for the use of 

 engineers " has led to an extension of the types made to meet the widening field of use. 



With the adoption of the Hoskins Patent Alloys, we are able to extend the range of measurement. By 

 virtue of the force developed by these Alloys and the use of Patent Spring Jewel-Mounting, these instruments 

 are more powerful and more robust than can be made by any other method. 



" High Power " Pyrometers. Reference to the Theoretical Notes on following pages will demonstrate 

 the means whereby these instruments operate with a greater force than can be had in any other type. It is 

 sufficient to say here, that the practical result is to make these pyrometers able to withstand the rough usage 

 often unavoidable in industrial work. The user is not asked to alter his manufacturing methods to suit the 

 pyrometer. The pyrometer has been specially designed to meet his needs and conditions. 



Pyrometers a Necessity. On the general need for a pyrometer in every heat operation it is hardly 

 necessary to dwell. There is a right heat for every operation and all other heats are wrong. The only certain 

 way to repeat good results and avoid bad ones is to measure the temperature regularly. 



Simplicity. No special skill is required to set up or use these PRACTICAL PYROMETERS. Each 

 outfit is complete, tested and adjusted for immediate use and is provided with every detail down to the screws 

 for fixing, and full instructions for use. The temperature can be read on the indicator or recorder as easily 

 as the time on a clock. The divisions and figuring are bold and can be read at a distance. See Figs. 3 and 5. 



A pyrometer outfit comprises one or more stems, connectors and cables and either an indicator or recorder. 

 See Figs. I, 2 and 10. 



CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS. 



