(c) Position the T square. Adjust the T square, template, pen,
and scriber to the proper position for lettering on the guidelines.
Once you have the T square properly positioned, a piece of tape at both
ends of the T square helps prevent it from moving. Occasionally, moving
the template along the T square causes smudges and streaks on the
drawing surface. To prevent these marks from appearing on the project,
place a piece of scrap paper between the drawing surface and the
template.
(d) Letter the graphics project. If you make a mistake when
lettering the graphics project, let the ink dry and remove the error
with a steel eraser. Then reburnish the drawing surface and insertthe
correct lettering.
(3) Other lettering machines. Other mechanical means of producing
lettering are the Kroy or Merlin pressure lettering machines. These
machines produce characters through a pressure or dry carbon transfer
process using a lettering font or wheel with various styles and sizes (8
to 36 point) of raised letters. The machine prints the characters on
1/2inch paper or plastic strip that is clear or colored with an
adhesive back with a protective, peeloff coating. These machines range
from a simple, one character at a time process, to automatic with
computer memory, editing functions, and a display screen (figure 173).
Figure 173. Pressure lettering machine
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SS0530
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