BALRD &TATLOCK (LONDON) LTD. 



4151 



4152 



4154 



4155 



4156 



4151 Mason's Hygrometer, cheap pattern, for demonstration purpose, on stout polished boxwood 



scale, enamel tubes ... .. .. .. .. .. .. each 5 



4152 Thermometer, wet and dry bulb (Mason's hygrometer), boxwood scale . . 10 



4153 Thermometer, wet and dry bulb (Mason's hygrometer), polished zinc scale .. ,, 011 



4154 Mason's Hygrometer, narrow pattern without the cage guard, cheap grade, boxwood 



scales in japanned case . . . . . . . . . . . . each 6 



4155 Mason's Hygrometer, with scales of porcelain, painted and fired. 



A. Japanned case .. .. .. .. .. .. .. 12 6 



B. Copper case . . . . . . . . . . . . . . 0150 



4156 Mason's Hygrometers, as No. 4155, fitted with wire guards to the front of the case to 



protect the scales. 



A. Japanned case .. .. .. .. .. .. .. each 13 C 



B. Copper case .. .. .. .. .. .. .. 16 C 





CROSS STREET HATTOTST GARDETST, E 



784 



