BAIRD &_ TATLOCK (LONDON) LTD. 



Wet md dry Bulb Thermometer. 



6129 



6134 



The " Demonstration " Set of Thermometers and Screen. 



6129 The Screen illustrated above is designed for the use of observers who have not the con- 



venience for setting up the ordinary full size Stevenson's Screen. As will be seen, the 

 apparatus is easily fixed upon a wall or post, and the thermometers are specially made in 

 a reduced size, whilst still of standard accuracy. The screen is designed to allow of the 

 correct observation of shade temperatures. It is well made, and painted white. 

 The thermometers, are graduated upon the stems, figured upon the opal scales, and well 

 mounted upon seasoned oak slabs. Price complete with thermometers as illustrated . . 



Prices Separately. 



6130 Screen 



6131 Wet and Dry Bulb Thermometer 



6132 Maximum Thermometer 



6133 Minimum Thermometer 



6134 s The " Peandar " set of Meteorological Instruments. Of standard accuracy, 



eminently suited for use in small observatories, schools, and for private observers. 



Set, comprising 



" Student's " Standard Barometer, Fig. 6098 (Rd. No., 420297), diameter of mercurial column .25 in. graduated 

 with inches and metric scales, with verniers reading to .01 in. and i millimetre. On polished mahogany or oak 

 back board, with opal glass reflectors and screws for vertical adjustment. 



Standard Mason's wet and dry bulb thermometer, oak frame, engine divided tubes, figured on opal glass 

 scales. Copper water reservoir and tables. Standard maximum thermometer, oak frame, engine divided tubes, 

 figured on opal glass scale. Standard minimum thermometer, oak frame, engine divided tubes, figured on opal 

 glass scale. Copper Snowdon rain gauge, complete with graduated glass measure. 



Meteorological Register for one year. 



Price complete 



N.B. All the above instruments in the above set will pass the National Physical Laboratory 

 test. National Physical Laboratory Certificates, if desired, 1 12s. 6d. extra. 



2 15 



16 

 19 

 10 

 9 



660 



1120 



