Frequently Asked Questions for Leica Roteo Family
Over what distance does the laser remain visible?
The spectrum of the laser light is within the region of visible
light. The effect of the laser depends on the intensity of the light
which is emitted. The weaker the ambient light, the more visible the
laser will be to the naked eye, even across greater distances (> 30
m). If there is bright ambient light, it can be difficult to detect the
laser even over short distances. Devices such as laser glasses, a target
plate, or an electronic laser receiver (e.g., RRC350) can make it
easier to locate the laser in certain applications.
Why is the laser not visible in the air, such as a laser light show?
The laser light is visible and it is focused; it propagates
straight out of the laser head while rotating. We see it as soon as the
light hits the surface of e.g. a wall. Laser beams used in a laser show
are generally doing the same; to make it visible the room is filled with
some kind of mist or smoke. We can see the laser light propagating
through the smoke because the smoke scatters small amounts of the light
away from the straight propagation into different directions.
Why is the
Leica Roteo 35G more visible than the red laser Roteo 35 though it
states to be within the same laser class than Roteo 35?
The laser class determines the output power of the light, which
is the physical intensity of the light; more specifically it tells how
much energy is transferred within one second by the laser beam. Thus the
laser class is an important criterion for eye-safety. However, the
visibility of light depends not only from the physical intensity but
also from the characteristic of the human eye: green light is better
visible than red or blue light. Infrared or ultraviolet light are not
visible at all for the human eye. Anyway, ultraviolet light is a part of
normal sunlight and could harm the human eye, thus quality sun-glasses
do not only filter visible but also ultraviolet light. Vice-versa, the
green light of Roteo 35G is as eye-safe as a Roteo 35, but nevertheless
the light is more visible for the user. Please read the user manual
Which Roteo package is right for me?
Roteo 35G Package (order no. 772’787) features all the comfort of the
Roteo 35WMR package above, additionally it allows to work with the
exceptionally bright green laser.
Roteo 25H Package (order no. 772’788) complements the offer providing an
attractive horizontal laser that can be used for leveling and paving,
e.g. checking concrete foundation height. With the R250 receiver
included it can be used for all sites up to 150 m distance from the
laser. It even allows adopting the laser plane on tilted surfaces. The
rechargeable battery allows for intensive use, which is also
cost-effective and environmentally-friendly.
What is scan mode used for?
In scan mode, the laser moves back and forth between two points
at high speed. In this field-of-view, the beam is highly visible.
What do I use a laser receiver for? Which receiver(s) can I use in conjunction with the Leica Roteo?
A receiver makes it possible to locate the rotating laser beam
across greater distances (max. 150 m/500 ft diameter) or in bright
We recommend the Leica RRC350 laser receiver for use in
conjunction with the Leica Roteo 20HV, 25H or 35, as it features an
integrated remote control for this exact instrument. Other receivers for
rotating lasers (e.g., Leica R250, Leica RodEye) can also be used. The
Leica Roteo 35WMR packages already features RRC350 receiver, and Leica
Roteo 25H package already features R250 receiver. RRC350 could be
ordered optionally with Roteo 20HV or Roteo 25H.
Leica Roteo 35G works exclusively with the RRC350G receiver,
because it is configured especially for green laser light reception.
What can I do with the target plate?
The target plate can be used to work in an unobstructed space,
i.e., if no wall is available on which to project the laser beam, the
target plate can help to make the beam visible. This is useful when
suspending a ceiling, for example.
How does automatic self-leveling work?
The Leica Roteo automatically aligns inclined positions in the
range ± 4.5°, controlled via electronic sensors and driven by
positioning motors. The instrument is precisely aligned to 1 mm at 10 m.
If the automatic self-leveling range is exceeded, the laser-head
rotation shuts down automatically and the laser beam starts to flash.
This means that expensive measuring errors can be avoided.
Which sort of tripod is recommended?
We offer three different tripods with Roteo:
elevating aluminum tripod: the most flexible choice, it works with all
Roteo models. With its working height at any value between 84 cm and 246
cm (equals roughly 3 ft to 8 ft) it is ideal for setting out meter
marks as well as for suspended ceilings. It is robust and features easy
removable rubber feet for both indoor and outdoor work. The mm scale
allows transferring heights easily.
dome-head aluminum tripod: ideal for outdoor work and thus predominantly
recommended with Leica Roteo 25H. Because of the dome-head it is easy
to setup the laser on uneven surfaces, as usually found on construction
sites. Works with all sorts of light-weight instruments, such as Leica
Roteo, Jogger or Sprinter.
aluminum tripod: the bargain choice, a robust tripod for outdoor works
with flat head and wing-nut clamping screw mechanism. Works with all
sorts of light-weight instruments, such as Leica Roteo, Jogger or
What is the warranty period for my instrument?
Leica Geosystems provides a one-year warranty for the Leica
Roteo. However, by registering the product on our Website
www.leica-geosystems.com/registration/ within 8 weeks after purchase
this warranty can be extended by a further year free of charge. If you
experience any problems with your Roteo instrument or if it requires
servicing (e.g., recalibration), please contact a certified Leica
Geosystems Service Center