Tektronix 491 Maintenance Manual page 167

FIGURE AND INDEX NUMBERS
Items in this section are referenced by figure and index numbers to the illustrations
which appear on the pullout pages immediately following the Diagrams section of this
instruction manual.
This mechanical parts list is indented to indicate item relationships. Following is an
example of the indentation system used in the Description column.
Assembly and/or Component
Detail Part of Assembly and/or Component
mounting hardware for Detail Part
Parts of Detail Part
mounting hardware for Parts of Detail Part
mounting hardware for Assembly and/or Component
Mounting hardware always appears in the same indentation as the item it mounts,
while the detail parts are indented to the right. Indented items are part of, and included
with, the next higher indentation.
Mounting hardware must be purchased separately, unless otherwise specified.
ABBREVIATIONS AND SYMBOLS
For an explanation of the abbreviations and symbols used in this section, please refer
to the page immediately preceding the Electrical Parts List in this instruction manual.
INDENTATION SYSTEM
7 -A