350 



A. DAIGGER & COMPANY, CHICAGO, U. S. A. 



6192 



6194 



6192 MICROSCOPE, Spencer Lens Co. No. 18. 



This is a new microscope. It is very high-grade instrument. It is 

 specially recommended for research work ^and for those who wish the 

 very best equipment, but with a plain, rectangular stage. 



No. 18 Microscope is similar to No. 15, excepting the stage. 



The Stage, 112x108 mm., is completely covered with vulcanite . rubber, 

 vulcanized directly to the stage plate. The distance from optical center 

 to arm is 90 mm. 



The Body Tube is standard size, 37 mm. diameter, taking standard ob- 

 jectives and oculars. 



The Arm is large and may easily be grasped with the whole hand. It 

 is fitted with Fine Adjustment "B," which is very durable. It automatically 

 takes up wear and there is no lost motion. The focusing button is grad- 

 uated with 100 divisions giving a reading of single microns. 

 - Rack-and-Pinion Substage, complete, and equipped with Wide Angle Con- 

 denser. 



The cabinet is polished mahogany, lock and key. 



6194 MECHANICAL STAGE, Spencer Lens Co. The most popular mechanical 

 stage yet produced; attachable to any modern square staged microscope. 



A stop at the front always insures its return to the same position on the 

 microscope stage. Should work be interrupted and the mechanical stage 

 be removed, when replaced, the object of interest may readily be found, 

 providing the vernier readings have been noted. The vernier of the lateral 

 movement is placed slightly to one side of the arm of the microscope where 

 it may easily be read. 



The movements are by diagonal rack and pinion, and are firm and reliable, 

 permitting the most delicate adjustments. The range of movement is 

 ample to cover the entire area of the standard slide, 1x3 inches. 

 Finished in alcohol-proof black enamel, complete in cabinet $19.00 



