b. Federal Stock Number. Indicates the Federal stock number assigned to the item and will be used for
requisitioning purposes.
c. Description. Indicates the Federal item name and a minimum description required to identify the item.
The last line indicates the reference number followed by the applicable Federal Supply Code for Manufacturer
(FSCM) in parentheses. The FSCM is used as an element in item identification to designate manufacturer or
distributor or Government agency, etc, and is identified in SB 708-42.
d. Unit of Measure (UIM). Indicates the standard or basic quantity by which the listed item is used in
performing the actual maintenance function. This measure is expressed by a two-character alphabetical
abbreviation; e.g., ea, in, pr, etc., and is the basis used to indicate quantities and allowances in subsequent
columns. When the unit of measure differs from the unit of issue, the lowest unit of issue that will satisfy the
required units of measure will be requisitioned.
e. Quantity Incorporated in Unit. This column indicates the quantity of the item used in the equipment.
Subsequent appearances of the same item in the same assembly are indicated by the letters "REF".
f. 30-Day DSIGS Maintenance Allowances.
NOTE
Allowances in GS column are for GS maintenance only.
(1) The repair parts indicated by asterisk entries in separate allowance columns for DS and GS represent
those authorized for use at that category of maintenance to be requisitioned on an "as required" basis, until
stockage is based on demand in accordance with AR 710-2.
(2) Allowance quantities are indicated in the special tool lists section for special tools, TMDE, and other
support equipment.
g. 1-Year Allowances Per 100 Equipments/Contingency Planning Purposes. Column intentionally left
blank.
h. Depot Maintenance Allowance Per 100 Equipments. This column indicates opposite the first
appearance of each item the total quantity authorized for depot maintenance of 100 equipments.
i. Illustration. This column is divided as follows:
(1) Figure number. Indicates the figure number of the illustration on which the item is shown in TM 11-
6625251-15.
(2) Item number. Indicates the item number or reference designation used to reference the item in the
illustration.
1-4. Special Information
a. Usable on codes are included in column 3. Uncoded items are applicable to all models. Identification
of the usable on codes used in this publication are -
Code
Used On
BWW
ME-22/PCM
BWX
ME-22A/PCM
b. The following publications pertain to the equipment and its components:
TM 11-625-251-15
Organizational, DS, GS, and Depot Maintenance Manual: Test Set TS-
140/PCM, Signal Generator SG-15/PCM and SG-15A/PCM and Decibel
Meter ME-22/PCM and ME-22A/PCM:
TM 11-6625-251-20P
Organizational Maintenance Repair Parts and Special Tools Lists:
Decibel Meters
ME-22/PCM and ME-22A/PCM.
1-5. Location of Repair Parts
a. This manual contains one cross-reference index (sec IV) to be used to locate a repair part when either
the Federal stock number or reference number (manufacturer's part number) is known. The first column in the
index is prepared in numerical or alphanumeric sequence in ascending order. The reference numbers
(manufacturer's part numbers) are listed immediately following the last listed Federal stock number in the index
of Federal stock numbers.
b. When the Federal stock number or reference number is known, follow the procedures given in (1) and
(2) below.
(1) Refer to the index of Federal stock numbers (sec IV) and locate the Federal stock number or
reference number. The FSX and reference number are cross-referenced to the applicable figure and item
number or reference designation.
(2) Refer to the repair parts list (sec II) and locate the figure number (col 10a) and item number or
reference designation (col 10b) as noted in the FSN index.
c. When the figure and item number or reference designation are known, scrutinize columns 10a and 10b
of the repair parts list (sec II) until the item is located.
d. When the FSN, reference number, figure number, item number and reference designation are not
known, scrutinize column 3 of the repair parts list (sec II), which is arranged in alphabetical order.
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