M17 Fire Control Quadrant
M17A1 Fire Control Quadrant
M18 Fire Control Quadrant
M18A1 Fire Control Quadrant
M138 Elbow Telescope
M138A1 Elbow Telescope
M137 Panoramic Telescope
M137A2 Panoramic Telescope
M137A3 Panoramic Telescope
M172 Telescope and Quadrant Mount
M172A1 Telescope and Quadrant Mount
M171 Telescope and Quadrant Mount
M171A1 Telescope and Quadrant Mount
Fabrication Instructions. Bulk materials required to manufacture items are listed in the bulk material
functional group of this RPSTL. Part numbers for bulk materials are also referenced in the Description
Column of the line item entry for the item to be manufactured/fabricated. Detailed fabrication instructions
for items source coded to be manufactured or fabricated are found in the appropriate maintenance work
packages of this manual.
Index Numbers. Items which have the word BULK in the figure column will have an index number shown
in the item number column. This index number is a cross-reference between the NSN / P/N work packages
and the bulk material list in the repair parts list work package.
Illustrations List. The illustrations in this RPSTL contain unit authorization items. Illustrations published
in the maintenance portion of this manual that contain unit authorized items also appear in this RPSTL.
HOW TO LOCATE REPAIR PARTS
When NSN or P/Ns Are Not Known.
First. Using the table of contents, determine the assembly group to which the item belongs. This is
necessary since figures are prepared for assembly groups and subassembly groups, and lists are divided into
the same groups.
Second. Find the figure covering the functional group to which the item belongs.
Third. Identify the item on the figure and note the item number(s).
Fourth. Look in the repair parts list work package for the figure and item numbers. The NSNs and part
numbers are on the same line as the associated item numbers.
When NSN Is Known.
First. If you have the NSN, look in the STOCK NUMBER column of the NSN index. The NSN is arranged
in NIIN sequence. Note the figure and item number next to the NSN.
Second. Turn to the figure and locate the item number. Verify that the item is the one you are looking for.