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138 ' THE WOODSMAN S HANDBOOK. 
Faustmann’s Height Measure. 
This instrument, shown in fig. 9, consists of a skeleton rectan- 
gular metal frame having two crossbars at one side of its longi- 
tudinal center, the frame and bars being in one piece. A slide, 
reversible end for end and having beveled edges, works in under- 
cut grooves formed in the inner edges of the crossbars. This slide 
is provided at its ends with thumb notches, and with transversely 
arranged index marks, designated I and II. A plumb line carry- 
ing a plummet is attached to the slide in the center of the index 

Fic. 9.—Faustmann’s height measure, 
mark IJ. A retaining spring secured to the back of the frame and 
bearing against the inner face of the slide holds it in any position 
in which it may be set. The left-hand end bar of the frame is 
furnished with an eyepiece, and the right-hand end bar with an 
objective, these being made of metal and hinged so as to be folded 
down out of the way when the device is not in use. A long, nar- 
row mirror, hinged to the frame at a point below the objective, is 
furnished to reflect a right-hand horizontal scale and a left-hand | 
horizontal scale engraved upon the lower bar of the frame, and 

