105 
Lens Holders. 
Marks 
Fig. 54. Lens Holder I. 
Lens Holder I. Heavy metal foot, lens liokler with hinge 
joints, rack and pinion for focussing 
35.— 
Fig. 55. Lens Holder H. 
Lens Holder II. Heavy metal foot with vertical brass rod 
and sliding lens holder 
The lens holders are specially constructed for use with 
the BRtiCKE lenses Nos. 83 and 84, but can also be employed 
with other low power lenses (Nos, 79 and 81). 
13.— 
