33
32
EN
EN
Calculation of area/volume function
y
When the button
is pressed for the first time, a symbol of an area in quadratic
units of area appears on the display and its flashing side will be measured by pressing
the „ON/DIST“ button.
After measuring the first length, the second side will be
flashing on he area symbol, the length of which will be measured by pressing the „ON/
DIST“ button again. After measuring the second side length of the area, the resulting area
value will appear at the bottom of the display, mathematically expressed as the product
of the sides.
y
Pressing the button
twice will show a cube symbol with a flashing side
in
cubic units of volume, where in order to calculate the volume it is necessary to consecu-
tively measure the lengths of all three sides in the same way as when calculating area.
The resulting volume is the product of three side lengths calculated at the bottom of the
display.
Pythagorean function (applies only to right angle triangles because the device
calculates length using the Pythagorean theorem)
y
Pressing the button
for the first time will show a symbol of a right angle triangle
with a flashing hypotenuse
- which is the longest side opposite the right angle of
the triangle. Press the „ON/DIST“ button to measure the length of the hypotenuse.
•
ATTENTION
y
The measured length of the hypotenuse must not be shorter than the measu-
red length of the flashing adjacent cathetus, because the hypotenuse must be
the longest side. If this happens, the „info“ symbol and the number 206 will
appear on the display.
After measuring the second side of the triangle (cathetus), press
the „ON/DIST“ button and the calculated length of the second cathetus will appear at the
bottom of the screen.
y
Pressing the button
twice will show a double right angle triangle, with which the
device after sequentially measuring sides 1, 2 and 3 in the above described manner, will
calculate the unknown length of the fourth side.
1
2
3
?
Table 1
ADDITIONAL INFORMATION ON THE
DISPLAY / REPLACING BATTERIES
y
There is a battery symbol
on the display which
indicates the battery power level by the number of lines.
If there are no lines inside the battery symbol, replace
the batteries with new ones.
To replace the batteries, tilt open the cover on the rear side
of the device, take out the flat batteries and based on the
indicated polarity, insert two new 1.5 V AAA-type batteries
into the battery compartment. Then close the cover.
y
If a number appears on the display during use, check
that the operating temperature is not too low or high,
whether the reflective beam is too weak due to an
insufficiently reflective surface, and in the case of the
Pythagorean function whether the measured length of
the hypotenuse is shorter than the cathetus, etc.
SAFETY INSTRUCTIONS FOR USING THE
DEVICE
y
Prevent the device from being used by children, persons
under the influence of substances affecting attention or
mentally unfit persons. Ensure that children do not play
with the device.
y
The device contains a laser. Do not alter the power of
the laser in any way as this could result in injury due to
exposure to laser radiation.
y
Do not look directly into the laser beam because the laser
may irreparably damage eye sight. It is not possible to
use sunglasses with UV filters or so-called laser glasses
as protection against damage by laser radiation.
y
Do not point the laser beam into optical devices (into bino-
culars, etc.) and do not observe it using optical equipment.
y
Do not point the laser beam at other people or animals.
y
Do not use the device in an environment where there is
a explosion or fire hazard or in a very dusty environment.
y
Do not point the laser beam at surfaces with a highly
reflexive surface, this could result in the laser beam
being reflected and hit the eyes of people or animals.
y
The device may interfere with sensitive devices, e.g.
pacemakers, listening devices, etc. Therefore, do not
use the device in the vicinity of medical equipment, in
aircraft or in the vicinity of petrol stations or other places
with a fire or explosion hazard.
y
The device comes with optical lenses in the opening of the
transmitter and receiver of the laser beam. Be especially
careful when handling the device so as not to damage it.
y
Use only batteries recommended by the manufacturer to
power the device.
IV. References on the
label and symbols
Laser radiation! Do not look
into the laser beam and
do not view it through an
optical device. This could
result in irreparable damage
to eye sight.
Read the user’s manual.
Complies with requirements
of the European Union.
Electrical waste symbol. Do
not dispose of an unservice-
able appliance with house-
hold waste, instead take if
for ecological disposal to
a respective collection point.
Table 2