Sokkia SDL50 Digital Level 28x

Sokkia SDL50 Digital Level 28x


Brand: Sokkia

SKU: 2112350B0


Authorized Dealer

Sokkia SDL50 Digital Level 28x
  • Easy, accurate measurement for construction and general applications. 
  • Sokkia brings the benefits of digital leveling to construction applications at an affordable price with the reliable, easy-to-use SDL50 Digital Level. 
  • In less than 3 seconds and with the touch of a key, height difference and distance can be measured and the result is stored in internal memory. 
  • The SDL50 minimizes human error and maximizes the ease of leveling work, allowing increased productivity and performance. 
  • Supplied with BDC46B Li-ion battery, CDC68 115VAC Charger, dust cover, tool kit, operators manual, carrying case. 
  • Use in conjunction with the Digital Level Rod
  • Warranty: 2 Years
  • (Former Part#'s 738050, 210115037)
Key SDL50 features include: 
  • Adjusts height and distance simultaneously 
  • Measurement is less than 3 seconds (single & repeat modes) 
  • Water resistant 
  • 2000-point internal memory 
  • Li-ion power system for up to 8.5 hours of continuous operation
Make measurements quick, easy, and accurate:
  • The SDL50 is an accurate, dependable digital level that combines user-friendly convenience with maximum functionality.
  • All you have to do is aim the staff, adjust the focus, and then with a single touch of a key the SDL50 accurately measures height and distance.
  • The results are easy to see on the LCD display.
  • High-speed measurement
  • Consistent performance
  • Water and shock resistant
  • 2000-point internal memory
  • Li-ion power system for up
Fast Measurements:
  • Aim, focus and press a key.
  • Height and distance are simultaneously measured in 2.5 seconds, 20 percent faster than ordinary digital levels.
Reliability you can count on:
  • You get superior measurement capability under all conditions.
  • Even when the staff surface is partially shaded, or in dim light where the brightness at staff surface is as low as 20 lux*, the SDL50 consistently provides accurate measurements without downtime.
  • *20 lux is defined as the minimum brightness with which human face can be recognized.
Automatic recognition of inverted staff:
  • The SDL50 automatically recognizes directions of RAB-Code staffs and displays the results with a minus sign (-) when the staff is inverted.
  • Height of ceiling, overpasses, bridges,road signs, tree branches, tunnel crowns, and other objects can be easily measured without a calculator.
Wave-and-Read technology:
  • The innovative “Wave-and-Read” technology provides an additional survey style.
  • The SDL50 tracks the RAB-Code staff waved back and forth to read the correct height.
  • The staff reading becomes the minimum when it is in vertical position.
  • The SDL50 automatically detects the least value of staff readings.
Choose your accuracy:
  • SDL50: 0.6 mm (Super-Invar Staff) / 0.8 mm (Invar) / 1.5 mm (Fiberglass) - This Unit
  • SDL30: 0.4 mm (Super-Invar Staff) / 0.6 mm (Invar) / 1.0 mm (Fiberglass) - Available here
  • Choose the digital level and staffs according to the accuracy* you need.
  • Sokkia offers the top of-the-line SDL1X model for higher accuracy of up to 0.2 mm. - Available here
  • *1 km double-run leveling
Robust internal memory:
  • Up to 2,000 measurements of elevation or height differences can be recorded in the internal memory.
  • Auto mode records data as soon as the measurement is taken, while manual mode allows you to check the measurement results before recording.
  • Stored data is easily exported using the “Spectrum Link” software.
Convenient on-board Programs:
  • The on-board measurement programs of SDL50 facilitate leveling and setting-out tasks.
  • Programs include:
    • Elevation
    • Height Difference
    • Cut and Fill Setting-out
    • Setting-out in Distance
Elevation/Height difference:
  • The SDL50 calculates height difference between backsight (BS) and foresight (FS)
  • Elevation of foresight can be calculated by inputting BS elevation
Cut and Fill Setting-out:
  • Slope can be set using Cut and Fill Setting-out program
  • Leveling is possible by inputting the height difference zero (0)


Height Accuracy (Electronic) 1.5mm (With Fiberglass RAB-Code Staves)
Standard deviation for 1km double run leveling
Distance Accuracy (Electronic) [<10m = +/-10mm] [10m to 50m = +/-.1%xD] [>50m = .2%xD]
Display resolution (Height) .0001 / .001m
Measuring Range 1.6 to 100m
Magnification 28x
Compensator Pendulum compensator with magnetic damping system
Data Storage 2000 points
Communications RS-232C
Dust/Water Protection IPX4
Operating Temperature -20 to +50ºC (-4 to +122ºF)
Operating Time More than 8.5 hours
Size W158 x D257 x H182mm (W6.2 x D10.1 x H7.2in)
Weight 2.4kg (5.3lb)


SDL50 Digital Level Brochure PDF  Operators Manual

SDL50 vs SDL30 Specifications Chart:

WARNING - This product contains chemicals known to the state of California to cause cancer, birth defects or other reproductive harm.  For more information go to