CHAS. LENTZ & SONS 
Small Caboratorp microtome 
Cut one-half actual size. 
No. 2130. Small Laboratory Microtome with Knife and Simple Clamp. 
This microtome cannot be excelled for physicians' use ; also for use in the 
smaller hospital laboratories. It is a thoroughly practical microtome in every 
way. 
The frame is of one solid casting, which forms the broad, firm base, the curved 
arm and the bed in which the knife-carrying block slides, thus securing the maxi- 
mum of rigidity and at the same time the most convenient form. 
The knife is carried on a solid block, triangular in section, 78 mm. long, 
which slides on three narrow, perfectly parallel plane surfaces in the V-shaped 
bed. The knife is held firmly on the block by means of a sliding thumb screw, 
which works in a T-shaped slot in the upper surface of the block. This form of 
block insures a perfectly even motion for the knife, absolute rigidity, and the mini- 
mum of friction compatible with these qualities. At the same time, the knife can 
be set at any desired angle to the object. The unusual length of the block pre- 
vents the knife from giving when cutting very hard substances. 
The object carrier consists of a strong clamp attached to a slide piece. The 
clamp has lateral (right and left) and vertical adjustments for bringing the object 
into proper relation to the knife, the object being held between corrugated metal 
jaws, which are opened and closed by means of a strong thumb screw. 
The slide piece is fitted with the utmost accuracy in the vertical slide, so that 
the object is moved in a plane exactly at right angles to the plane in which 
the knife moves, and with no liability to give way under the pressure of the knife. 
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