LABORATORY SUPPLIES AND CHEMICALS 



203 



3387 



3387 MAGNIFIERS, Triple Aplanat. 



These lenses are remarkable for their great working distance and their 

 unusually large, flat field. They are perfectly achromatic and free from 

 distortion. 



3388 3390 



3388 MALLETS, hardwood $0.50 



3390 MALLETS, Rawhide end 1.75 



MANOMETERS, see Gauges. 



MEASURES 



3392 



3396 



3392 MEASURES, Calipers, in and outside 4-inch $0.50 



3394 MEASURES, Caliper, Micrometer, measures all sizes, less than ^-inch by 



thousandth of an inch 7,59 



3396 MEASURES, Caliper, Micrometer, graduated to read to hundredths of a 



millimeter 7 50 



