GLASS DRILL INSTRUCTION MANUAL
INSTRUCTION MANUAL
crlaurence.com
C.R. Laurence Co., Inc.
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2503 E. Vernon Ave., Los Angeles, CA 90058
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1.800.421.6144
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crlaurence.com
NOVEMBER 2020
P. 3
POWER SWITCH
The momentary (membrane) power switch is the preferred switch to use for the TS1320 product. This switch minimizes
the use of the lamp in between tests, and extends the life of the batteries. As described later in this operating manual,
being able to cycle the power on and off also aids in the determination of the tin side glow.
The continual power (slide) switch should only be used when the operator is going to be taking repeated measurements
continuously, with few breaks.
OPERATION
You can use the TS1320 in three different methods. You can either choose to view the image of the lamp through the glass
by placing the instrument on the bottom side of the glass, OR you can tilt the TS1320 on the top surface of the glass and
view the reflection of the lamp under the meter. You may find that one approach may work better for certain glass sam-
ples and various lighting conditions. BEFORE performing any tests, we recommend putting on the protective UV blocking
safety glasses that were supplied with the product.
TRADITIONAL BOTTOM SIDE METHOD
To test glass using the bottom side method, place the TS1320 on the bottom side of the glass, as shown in Figure 1. Tum
on the power, but do not view the image of the lamp unless it is placed behind the glass. If the bottom side is the TIN SIDE
of the glass, the Image of the lamp will appear milky white (Figure 1). The intensity of the lamp may even appear lo get
stronger. There are 2 simple ways to improve the viewing of the glow. The first is louse the momentary power switch on the
meter to pulse the power on and off. The pulsing power magnifies the difference between a tin side glow versus no glow.
The second method is to wave the meter closer and further away from the glass surface to magnify the glow differential. In
certain situations it may be easier to view the milky white image at a slight angle. Viewing the Image at an angle is especially
helpful when working with tinted and reflective glass.
If you are on the air side of the glass, there will be no milky while glow. The image of the lamp will remain unchanged as
shown below.
CONTINUAL POWER
(Slide switch) power stays on continuously when
the slide switch is moved to the ON position
MOMENTARY POWER
(Membrane switch)power only stays on while
the membrane switch is being depressed
FIGURE 2:
Air Side (NOT Tin Side)
Dull violet lamp image
FIGURE 1:
Tin Slide Milky
while image
