General Tools and Instruments GTi10-20-30-50 - Manual (Page 59)

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Appendix I
Using an Optional Lens
Optional wide-angle and telephoto lenses for GTi series cameras are available
from General.
Whenever you install an optional lens, the camera will automatically configure
itself to work with it.
Each of the optional lenses--which are available with a 6.4
o
, 9
o
or 38
o
field of
view for the GTi10, GTi20 and GTi30, and a 12
o
or 48
o
field of view for the
GTi50--has an uncalibrated accuracy of
±3 o F (±2 o C)
or ±4% of the reading,
whichever is greater.
If you would like your optional lens to have the same accuracy as the standard
lens supplied with your camera (
±3 o F (±2 o C)
or ±2% of the reading, whichever
is greater), you can have General calibrate the lens, installed on your camera,
for a fee. Contact General's Customer Service Department at 800-697-8665 to
make shipping arrangements.