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4．Product operation
4.1 Operation Notice
4.1.1 Please read this manual before operation.
4.1.2 The digital indication on the screen does not represent the length or
distance determined by a millimeter or other linear unit, digital reduced only shows
the needle moving toward the apical.
4.1.3 When just put in the file into the root canal, the number showed on the
screen may appear larger or direct show “OVER”, continue pushing toward the
file slowly, display return to normal.
4.1.4 To prevent the measurement error caused by the contact of the liquid,
the gums and adjacent root canal. Please use a cotton ball dry pulp bottom before
test.
4.1.5 Please choose the file matched with the diameter of the root canal, if
use a small file in a big root canal, the digital on the screen will be instability.
4.1.6 Line link test must be performed before operation every time（please
check 3.1.3）, make sure the contact of file clip and measuring line is good.
4.1.7 Accessories contact with patient（file clip and lip hook）can be used
repeatedly, but should be sterilized by high temperature and high pressure before
use.
4.1.8 Do not disassemble the product without permission. Once demolition
there will no warranty.
4.2 Usage requirement
4.2.1 To measure according to the specific description in the manual.
4.2.2 The dentists should have the knowledge of teeth position and average
length and the skill to operate the device.
4.2.3 An fully exposed access cavity to show the pulpal cabin.
