User's Manual

Take the influences of the surrounding area into account. Do not use the appliance where there is a risk of fire
or explosion.
Modification of the tool is not permissible.
2.2 PR 35 rotating laser
The Hilti PR 35 is a rotating laser tool with a visible rotating laser beam and a reference beam set at 90° to the
main beam. The PR 35 can be used for alignment in the vertical, horizontal and inclined planes.
2.3 Features
The tool makes it possible for a single person to level or align in any plane quickly and with great accuracy.
The tool features automatic leveling (within 10° (±5°)). The tool levels itself automatically after switching on.
The laser beam is emitted only when the specified accuracy has been achieved.
LEDs indicate the tool’s current operating status.
The tool is powered by a rechargeable Li‑ion battery which can be charged while the tool is in operation.
The PR 35 has a number of useful features: Monitoring mode, auto-alignment, sleep mode and button lock.
2.4 PRA 35 combined remote control and laser receiver
The PRA 35 is a combined remote control unit and laser receiver. It can be used to control the PR 35 rotating
laser over great distances. The PRA 35 also serves as a laser receiver and can thus be used to detect and
indicate the laser beam at great distances.
2.5 Digital distance measurement display
The PRA 35 shows the distance between the laser plane and the marking notch on the PRA 35 in the digital
display. This allows the user to determine the exact position of the receiver relative to the laser plane, with
millimeter accuracy, in a single operation.
2.6 Speed of rotation / line function
3 speeds of rotation are available for use (300, 600, 1200 /min). It is possible to switch between the individual
functions such as rotation and line functions. This is possible with the PR 35 rotating laser and with the PRA
35.
The line function improves laser beam visibility and limits the laser beam to a certain working area.
2.7 Automatic alignment and monitoring
Using the PR 35 and the PRA 35, a single person can align the laser plane automatically with a certain point
with great accuracy. When required, the laser plane can be checked at regular intervals with the aid of the
monitoring function and the PRA 35 in order to avoid possible deviations due to temperature fluctuations,
wind or similar.
2.8 Digital slope display with patented electronic axis alignment
The digital slope display can indicate a slope of up to 15%. This makes it possible to set out and check slopes
without having to make any calculations.
2.9 Shock warning
The tool goes into warning mode if it is knocked off level (due to vibration or impact) while in operation: all
LEDs blink and the laser switches off (the laser head no longer rotates).
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