FOR FIELD EXCURSIONS 



A PORTABLE MICROSCOPE 



is required that is really 

 portable and sacrifices none 

 of the efficiency of the 

 bulkier instruments. 



Microscope APS has all the 



adjustments of our laboratory 

 instruments, with all their [ 

 accuracy and convenience of 

 manipulation — and the cost is 

 practically the same. 



APS 6 in carrying case weighs 

 8 lbs., 5 oz. The carrying case 

 is less than one-half the size of 

 a regular microscope case. The 

 folding base is the only collap- 

 sible feature and there is no 

 inclination joint. 



APS has the lever side fine 

 adjustment (two heads) which 

 is simple in design and responds 

 instantly. It ceases to operate 

 when the objective touches the 

 specimen. 



Microscope APS 6 



Equipped with screw substage having iris diaphragm 

 with protective locking device, Abbe condenser, 1.20 

 N.A., in iris mount; 5 X and 10 X eyepieces; 16 mm 

 and 4 mm objectives on dust-proof nosepiece; com- 

 plete in carrying case _ _ - $48.00 



Bausch ^ Ipmb Optical ®. 



NEW YORK WASHINGTON CHICAGO SAN FRANCISCO 



LONDON ROCHLSTEn, NX ^Rankfort. 



Leading American Makers of Microscopes, Projection Lanterns (Balopticons), 

 Photographic and Ophthalmic Lenses, Binoculars and other High 



Grade Optical Products. 



