Blueprint compositions, Continued
Bill of materials The bill of materials block contains a list of the parts and/or material needed
for the project. The block identifies parts and materials by stock number or
other appropriate number and the quantities required. The bill of materials
often contains a list of standard parts known as a parts list or schedule.
Locate a bill of materials on the right-side of the drawing.
Figure 1-41 is an example of a bill of materials.
Figure 1-41.—Bill of materials.
Zone numbers
Zone numbers help locate particular points or parts on a drawing. Similar to
numbers used on maps, specific locations designated by letters and numbers
serve to pinpoint locations. Mentally draw invisible horizontal and vertical
lines to the point of intersection. Zone numbers are read from left to right
and from top to bottom, and are located in the margin or border areas of
drawings.
Continued on next gage
1-53
