fixed. An adjustable scriber produces letters with
any slant from vertical to 22 1/2 degrees forward
from a single template; a fixed scriber produces
only vertical letters. Both scribers consist of a
tracing pin, pen socket, socket screw, and a tail
pin. Figure 3-59 shows a fixed scriber. The
tracing pin on most Leroy scribers is reversible,
One point is used with fine groove templates (Nos.
060, 080, and 100), and the other point is for wider
groove templates (No. 120 to No. 500).
LINE WEIGHTS
Recommended combinations of template and
pen for best proportion between line thickness and
letter size are shown below.
Template No.
Pen No.
060
000
080
000 or 00
100
00
120
0
140
1
175
2
200
3
240
3
290
4
350
4
425
5
500
6
This list is also found inside the lid of the
Leroy lettering set case.
OPERATING PROCEDURES
A certain technique is required to manipulate
the Leroy scriber with the template and, at
the same time, hold the template against the
working edge of the T square or straightedge
without slipping.
The T square or straightedge must be held in
position with the ball of your left hand resting
on the blade, while the fingers of the left hand
hold the template against the working edge and
change the position of the template when
necessary. The scriber is held between the thumb
and first three fingers of your right hand. The little
finger of the right hand presses the right side of
the template against the working edge, preventing
the tracing pin from slipping out of the character
grooves of the template. Care must be taken to
keep the tail pin in the straight-guide groove at
the bottom of each template. When you are
making long lines of large lettering, you may find
it helpful to secure the T square or straightedge
at both ends of the drawing board with drafting
tape.
Using the above techniques to manipulate the
scriber and template, follow the steps listed below
to form uniform letters, words, and sentences. As
you follow the steps, refer to figure 3-59.
1. Select the template with letters of the
desired height.
The distance between each
graduation at the bottom of the template is equal
to the height of the letter that can be made with
the template. The numbers in a fraction are made
by using a template one size smaller than that
used for whole numbers.
2. Lay the template along the top edge of a
T square or straightedge.
3. Using the table of recommended template
and pen sizes previously mentioned, select the
proper pen to give a well-proportioned letter.
NOTE: On drawings with a great deal of
lettering, the recommended combinations may be
altered by one pen size, either under or over the
recommended size, for variation and appearance.
Never use a pen size more than two over the
recommended size.
4. Insert the selected pen into the socket of
the scriber arm until the shoulder of the pen rests
on the scriber arm.
5. Tighten the screw on the side of the scriber
arm.
6. Loosen the locknut on the adjusting screw
in the scriber arm.
7. Set the tail pin of the scriber in the
straight-guide groove of the template.
8. Set the tracer pin of the scriber in the
groove of a character.
9. Lower the pen gently to the drawing
surface.
10. Raise or lower the scriber arm by turning
the adjusting screw until the tip of the cleaning
3-39
