TM 5-6675-322-14
9 - 4 . 8 A i r V e l o c i t y M e t e r.
C o n t r o l o r I n d i c a t or
Function
Low Speed Scale
Low and High Range Orifice
C a l i b r a t i o n O r i f i c e
High Speed Scale
I n d i c a t i n g P i t h B a l l
Cleaning Access Screws
A i r I n l e t H o l es
Indicates wind speed
from 2-10 mph.
Determines which scale is
to be observed for
reading.
Allows accurate calibra-
t i o n o f r e a d i n g.
Indicates wind speed from
4-66 mph when orifice is
covered.
Indicates wind speed to
be determined from scale.
Allows access for clean-
i n g.
Located on opposite face
t o s c a l e .
Provides ven-
t u r i e f f e c t t o r a i s e p i t h
b a l l i n r e l a t i o n t o w i nd
speed.
9-9
