TM 75053
ML331/TM
Figure 56. Barometer ML331/TM.
Range:
1. NOMENCLATURE: Barometer ML331/TM.
Extent of scale. _ _ _ 840 to 1,040 mb.
2. TYPE CLASSIFICATION: Standard A.
Millibar _ _ _ _ _ _ 200.
Scale _ _ _ _ _ _ _ _ _ _ _ _ Mb only; graduated in
3. SECURITY REQUIREMENTS: Unclassified.
mb; full numerical desig-
nation every 10 mb.
4. PRIMARY USE OR CONCEPT OF EMPLOYMENT:
Max usable elevation _ _ 5,000 ft (approx).
Used as a reference standard for checking the accuracy
Dimensions _ _ _ _ _ 11 in. long, 11 in. wide, 5 in.
of barometers.
deep.
5. BRIEF FUNCTIONAL DESCRIPTION:
Weight _ _ _ _ _ _ _ _ _ _ 3 lb net, 14 lb packed (for
Barometer ML331/TM is a precision aneroid barometer
hand transportation).
which is used with another precision aneroid barometer
and a precision mercurial barometer as a set of reference
7. MAJOR COMPONENT:
standard barometers for weather station region control
Barometer ML331/TM.
offices of the Air Force. Barometer ML331/TM is used
with Barometer ML332/TM or ML333/TM in the
8. SET, SYSTEM, FACILITY, AND CONFIGURATION
field for checking both aneroid and mercury station
, APPLICATIONS:
barometers. Barometer ML331/TM is constantly checked
Barometer ML331/TM is used with Barometers ML
against one of the other aneroid barometers and against
330/FM and ML332/TM or ML333/TM to form a set
the mercury standard in the regional office at specified
of reference standard barometers.
intervals.
9. ADDITIONAL EQUIPMENT REQUIRED AND AUX-
6. TECHNICAL CHARACTERISTICS:
ILIARY EQUIPMENT: None.
Type _ _ _ _ _ _ _ _ _ _ Aneroid; beryllium-copper,
corrugated cell without
10. TOOLS AND TEST EQUIPMENT: None.
spring.
139
Previous Page
