CHAS. LENTZ & SONS 
Deu) Complete Substase 
AS FITTED TO THE CAS. AND ALL MICROSCOPES, THE 
CATALOGUE DESIGNATION OF WHICH ENDS IN S. 
One-half actual size 
All substages heretofore constructed have been deficient either in stability 
or convenience, and more often than otherwise in both. The very limited space 
to be used and the variety of adjustments sometimes required in the substage 
have made it very difficult to design a form which, while sufficiently convenient, 
would be rigid enough to withstand constant wear, and at the same time not be 
out of proportion to the microscope. The New Complete Substage obviates all 
these difficulties in the simplest possible manner, and is without question the 
most complete and practical substag:e yet made. 
The entire substage is supported on a heavy metal bar joined to the main arm 
of the microscope, and to which it is attached by slide with rack and pinion, 
whereby the whole substage may be adjusted with reference to the microscope 
stage. The slide and rack and pinion are the same as used on the coarse adjust- 
ment of the microscope, insuring the same accuracy and wearing qualities, the 
automatic device for retaining the pinion in adjustment, and the same thickness of 
metal having been retained. 
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