Bosch PLR 50 - User Manual

Questions and Answers

T
Tyler CollinsAug 13, 2025
What to do if Bosch PLR 50 Measuring Instruments show 'Error' and '––––' in the display?
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  Vincent LyonsAug 13, 2025
  If the Bosch Measuring Instruments display shows “Error” and “––––”, it could be due to several reasons. The angle between the laser beam and the target may be too acute, so try to enlarge it. Alternatively, the target surface might be reflecting too intensely or insufficiently, or the ambient light could be too bright; in this case, use the laser target plate. Finally, the laser beam outlet or the reception lens could be misted up, possibly due to a rapid temperature change; if this happens, wipe them dry with a soft cloth.
A
allisoncunninghamAug 17, 2025
What does 'Error' indication flashes mean on Bosch Measuring Instruments?
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  Cindy ShafferAug 17, 2025
  If the “Error” indication flashes at in display on your Bosch Measuring Instruments, it signifies that you're trying to add or subtract measured values with different units of measure. Ensure you only add or subtract measured values with the same units.
A
Anthony YuAug 20, 2025
Why Bosch PLR 50 give unreliable measuring result?
- R
  Robin PerezAug 20, 2025
  If you get an unreliable measuring result with your Bosch Measuring Instruments, it might be because the target surface doesn't reflect correctly, for example, if it's water or glass. In this case, cover the target surface. Also, check that the laser beam outlet or the reception lens are unobstructed.
L
lauraclarkAug 25, 2025
What to do if battery low indicator is flashing on Bosch PLR 50?
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  Vincent RodriguezAug 25, 2025
  If the battery low indicator is flashing on your Bosch Measuring Instruments and measurement is not possible, it means the battery voltage is too low. Replace the batteries or rechargeable batteries to resolve this issue.
K
kporterAug 28, 2025
How to fix temperature warning on Bosch Measuring Instruments?
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  theresa89Aug 28, 2025
  If your Bosch Measuring Instruments are showing a temperature warning indicator flashing and you can't take measurements, it's likely because the tool is outside its operating temperature range (–10 °C to +50 °C, or up to +40 °C in continuous measurement mode). Wait until the tool reaches the correct operating temperature.
K
Kimberly Buchanan MDSep 1, 2025
Why Bosch Measuring Instruments measuring result is not plausible?
- M
  Michelle ThomasSep 1, 2025
  If the measuring result from your Bosch Measuring Instruments isn't plausible, it could be due to a wrong reference level being set. Make sure to select the reference level that corresponds to your measurement. Also, ensure there is no obstruction in the path of the laser beam and that the laser point is completely on the target surface.
S
sabrinajacksonSep 4, 2025
What does battery low indicator on Bosch PLR 50 Measuring Instruments mean?
- H
  Heather WhiteSep 4, 2025
  If the battery low indicator appears on your Bosch Measuring Instruments, it means the battery voltage is decreasing, but measurement is still possible. Replace the batteries or rechargeable batteries.
F
fergusonbrittanySep 8, 2025
What to do if Bosch Measuring Instruments calculated value is greater than 99999 m/m[2]/m[3]?
- G
  ggravesSep 8, 2025
  If the calculated value is greater than 99999 m/m[2]/m[3] on your Bosch Measuring Instruments, divide the calculation into intermediate steps.

Summary

Product Description and Specifications

Intended Use

Describes the tool's purpose for measuring distances, lengths, heights, clearances, and calculating areas/volumes.

Product Features

Lists and describes the numbered features of the measuring tool as shown in the illustrations.

Technical Data

Assembly

Inserting;Replacing the Battery

Details on how to insert or replace the batteries in the measuring tool, including polarity and battery life.

Operation

Initial Operation

Instructions for the first use of the measuring tool, covering handling, environment, and potential impacts on accuracy.

Switching On and Off

How to turn the measuring tool on and off, and its auto-off function to save battery life.

Measuring Procedure

Step-by-step guide on how to perform measurements, including aiming and initiating the measurement.

Selecting the Reference Level

Explains how to choose the measurement reference point (rear edge, pin edge, front edge) for accurate readings.

Length Measurement

Explains how to perform basic length measurements using the tool.

Area Measurement

Details how to measure and calculate areas using two length measurements.

Volume Measurement

Explains how to measure and calculate volumes using three length measurements.

Indirect Length Measurement

Describes how to measure distances indirectly using the Pythagorean theorem.

Continuous Measurement

How to perform continuous measurements and read updated values in real-time.

Memory Functions

Instructions for storing, adding, subtracting, and displaying measured values in memory.

Working Advice

General Information

Basic guidelines for using the tool, including keeping lenses clear and not moving during measurement.

Influence on Measuring Range

Factors affecting the measuring range, such as light and target surface properties.

Influence on Measuring Result

How different surface types and environmental factors can affect measurement accuracy.

Measuring with Positioning Pin

How to use the positioning pin for measurements from corners or difficult areas.

Aligning with Spirit Level

Using the built-in spirit level for easier sighting of target surfaces.

Sighting with Alignment Aid

How to use the alignment aid for easier sighting over longer distances.

Troubleshooting

Maintenance and Service

Maintenance and Cleaning

Instructions for cleaning the measuring tool and its components, especially the reception lens.

After-sales Service and Customer Assistance

Information on obtaining support for maintenance, repair, spare parts, and product applications.

Bosch PLR 50 Specifications

General

Accuracy	± 1.5 mm
Measuring Time, Typical	0.5 s
Measuring Time, Max	4 s
Protection Class	IP54
Measurement Range	0.05 m to 50 m
Laser Class	Class 2
Laser Type	635 nm
Functions	Area / Volume calculation, Addition, Subtraction, Continuous measurement
Operating Temperature	0°C to +40°C
Storage Temperature	-20°C to +70°C