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  1. Products & Services
  2. Measuring devices
  3. Distance measurement
  4. MultiMeasure Basic BD21

BD21 distance meter

With a 90° tilt sensor for manifold laser distance measurements

Indirect distance and height or partial height calculation

The advanced distance meter BD21 offers functions and equipment features as standard which are usually restricted to expensive high-class devices: thanks to the integrated 90° tilt sensor with 3-point Pythagoras functions you can not only determine distance, area or volume in a quick and precise way – even height and partial height measurements, distance tracking or indirect distance or height measurements past obstacles do not pose a problem for this handy measuring device, which can further be applied as electronic spirit level.

Despite an extensive functional range, the laser distance meter is extremely easy to handle – every function and setting has a separate button.

Can be used as an electronic spirit level

Due to the selectable illumination of the large multi-line display, measurements pose no problem no matter if in dark surroundings or daylight.

Designed for indoors usage, the BD21 can also confidently cope with rough situations on construction sites, for the robust measuring device is dust- and splash-proof as per IP54.

It is therefore excellently suited for all types of handicraft.

Special equipment features

BD21 - size comparison
Size comparison
BD21 – at an angle
At an angle
BD21 - side view
Sleek and slim
BD21 - Bag
With bag

Precise laser measurement:

Range of 0.05 m to 70 m
Indirect distance and height or partial height calculation (3-point Pythagoras functions)
Robust workmanship – dust- and splash-proof (IP54)
Technical data by comparison

All distance measuring devices in direct comparison:

So that you can find exactly the right measuring device for you, you have the opportunity to clearly compare all distance measuring devices from Trotec with one another.

Models which you do not wish to include in your comparison can be easily dismissed with only one click.

Technical data by comparison

A few practical benefits:

  • Integrated 90° tilt sensor
  • Range of 0.05 m to 70 m
  • Indirect distance and height or partial height calculation (3-point Pythagoras functions)
  • Precise measurement of distances, areas and volumes within seconds
  • Illuminated multi-line display
  • Can be used as an electronic spirit level
  • Robust workmanship – dust- and splash-proof (IP54)
  • Multifunctional end piece
  • Timer function
  • Automatic switch-off
  • Tripod thread

BD21 & BD26

Do you need a longer range?

Discover the more powerful range finder BD26 in an equally handy and slim design.

The BD26 has a range of 0.05 m to 120 m. The large multi-line display designed for indoor use can be optionally illuminated and thus enables measurements even in dark rooms or in the daylight without any problems. The integrated electronic spirit level completes the equipment. 4Owing to its dust and splash protection as per IP54, the robust device also allows for use in rough construction site conditions.

Find out more here ...


Entfernungsmesser BD21 show in Trotec online shop

Entfernungsmesser BD21

You save: 33 %

59.99 € 39.99 € incl. VAT Show net price (VAT not included)


Technical data

Technical data
General information
  Article number 3.510.205.156
Distance measurement
  Min. measuring range | Distance measurement 0.05 m (0.16 ft)
  Min. measuring range [m] 0.05
  Max. measuring range [m] 70
  Min. measuring range [ft] 0.16
  Max. measuring range [ft] 230
  Max. typical range 70 m (230 ft)
  Typical measuring tolerance ±2 mm (± 0.08 in)
Inclination measurement
  Measuring range | Inclination measurement 45 °
  Accuracy to the laser beam ±0.3°
  Accuracy to the housing ±0.3 °
  Ø of the laser point at distance 10 [mm] 6
  Ø of the laser point at distance 50 [mm] 30
  Ø of the laser point at distance 100 [mm] 60
  class 2
  output < [mW] 1
Memory organisation
  Recall of previous measurements 10
Device control
  Push buttons
  Membrane keyboard
Housing design
Type of protection
Power supply
  Internal via battery
  Charging time [h]
  Rated voltage [V]
  Capacity [Ah]
  Output voltage [V]
  Charging current [A]
  Internal (battery) 2 x 1.5 V, AA
  Measurements per battery set 5.000 ~ 8.000
Ambient conditions
  Operation - min. temperature [°C] 0
  Operation - max. temperature [°C] 40
  Storage - min. temperature [°C] -20
  Storage - max. temperature [°C] 70
  Length (packaging excluded) [mm] 27
  Width (packaging excluded) [mm] 49
  Height (packaging excluded) [mm] 118
  Tiefe (packaging excluded) [mm] 27
  (packaging excluded) [kg] 0.15
Standard scope of delivery
Standard scope of delivery
  Measuring device
  Wrist strap
  Operating manual
Ascertainable measured values and functions
Internal sensors
  Distance [m]
  Distance [ft]
  Distance [in]
  Area [m²]
  Area [ft²]
  Area [in²]
  Volume [m³]
  Volume [ft³]
  Volume [in³]
  Inclination [°]
  Inclination [%]
  Inclination [mm/m]
  Inclination [in/ft]
  Distance [yd]
Functions and features
  Minimum value display
  Maximum value display
  Automatic switch-off
  Backlit display
  Indirect measurement as per Pythagoras' theorem
  Indirect measuring using tilt sensor
  Non-stop measuring
  Area measurement
  Volume measurement
  Recall of previous measurements
  Multifunctional end piece
  Electronic spirit level
  Distance tracking
  Battery status indication
  Power Range technology
  Smart Horizontal Mode
  Average value display
  Painter function (partial area measurements)
  Solid angle and triangular function
  Height tracking
  Trapezoidal measurements
  Height profile measurements
  Bluetooth data transfer
  Navigation keys for Bluetooth data transfer
  Digital 4x zoom viewfinder
  Constant memory
  Tripod thread
  Standard deviation
  Acoustic alarm function
  Compass function
  Leica Disto sketch - free app for iOS/Android
  Measuring tilted objects
  Integrated overview camera
  Gallery with USB download
  Image-based measurements
  Photo surface area
  Long Range Mode
  Personalised favourites

 standard equipment

 optionally available

 not available



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