MIL-HDBK-1110
Section 10:
FIELD INSPECTION INSTRUMENTS
10.1
Introduction. This section describes field instruments
commonly used in inspection of field painting. The References
section of this handbook lists the full title and sources of
standard test methods referenced in this section. For equipment
descriptions having no referenced standards, no standards are
available. Typical suppliers include:
a) Paul N. Gardner Company, Inc., Gardner Building,
P.O. Box 10688, Pompano Beach, FL 33060-6688.
b)
KTA-TATOR, Inc., 115 Technology Drive, Pittsburgh,
PA 15275.
c)
ZORELCO, P.O. Box 25500, Cleveland, OH 44125.
d) Pacific Scientific, 2431 Linden Lane, Silver
Spring, MD 20910.
e) S. G. Pinney & Associates, 2500 S.E. Midport Road,
P.O. Box 9220, Port St. Luice, FL 34952.
10.2
Illuminated Microscope. A pocket-sized illuminated
microscope is frequently used to detect mill scale, other surface
contamination, pinholes, fine blisters, and other microscopic
conditions during painting operations. These microscopes are
available with magnifications of 5 and higher.
10.3
Instruments for Use With Abrasive Blasting. A few
instruments are available for testing the operational readiness
of equipment for abrasive blasting of metals for painting.
10.3.1
Gage for Determining Nozzle Pressure. A pocket-sized
pressure gage with a hypodermic needle is used to determine the
blasting pressure at the nozzle. The needle is inserted in the
blasting hose just before the nozzle in the direction of the
flow. Instant readings can be made up to 160 pounds per square
inch (gage) (psig).
10.3.2
Wedge for Determining Diameter of Nozzle Orifice. A
hand-held calibrated wedge is inserted in the direction of flow
into the nozzle orifice to determine its size (inches) and
airflow (cfm at 100 psig). The orifice measuring range is 1/4 to
5/8 inch, and the airflow range is 81 to 548 cfm.
10.3.3
Surface Contamination Detection Kit. The level of
cleanliness of abrasive blast cleaned steel can be determined by
comparing it with SSPC VIS 1 photographic standards. SSPC VIS 3
photographic standards are used for determining level of
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