Sokkia Auto Level SDL50 with 28X Magnification and Working Range 15'

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$2,400.00 - $2,600.00 / Sets | 1 Set/Sets (Min. Order)
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Quick Details
Place of Origin:
Brand Name:
Model Number:
Magnification / Resolving power:
28x / 3.5"
Data storage:
2,000 points internal memory
RS-232C, baud rate 1,200 to 38,400 bps
Working range:
BIS30A staff:
0.6mm (0.024in.)
BIS20/30 staffs:
0.8mm (0.03in.)
BGS staffs:
1.5mm (0.06in.)
Objective aperture:
36mm (1.4in.)
Minimum brightness condition:
20 lux at the surface of staff (with natural light)
Supply Ability
Supply Ability:
1000 Set/Sets per Month
Packaging & Delivery
Packaging Details
Sokkia Auto Level SDL50 with 28X Magnification and Working Range 15'
Size: 50cm x 35cm x 40cm Weight:13kg
Shanghai Tianjin Shenzhen Hong Kong

Sokkia Auto Level SDL50 with 28X Magnification and Working Range 15'

Product Description


1. 2.5 seconds -- High-speed Measurement

Aim, focus, and press a key. Height and distance are simultaneously measured in 2.5 seconds, 20 percent faster than ordinary digital levels.


2. Consistent Performance in Diverse Environments

The SDL50 provides the superior measurement capability under a variety of environmental conditions. Even when the staff surface is partially shaded, or in dim lighting conditions where the brightness at staff surface is as low as 20 lux, the SDL50 consistently provides reliable measurement results without downtime. A small flashlight is enough to illuminate the staff in the dark.


3. 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, overpass, bridge, road sign, tree branch, tunnel crown, and other objects can be easily measured without a calculator.


4. Wave-and-Read Technology

The innovative "Wave-and-Read" technology provides an additional survey style option. 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.


5. Choice of Accuracy

SDL50: 0.6mm (New Super-Invar Staff) / 0.8mm (Invar) / 1.5mm (Fiberglass)

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 0.2mm.


6. Internal Memory

Up to 2,000 measurement data of elevation or height difference 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 can be exported using the "Spectrum Link" software.


7. Convenient Onboard Programs

The onboard measurement programs of SDL50 facilitate leveling and setting-out tasks. Programs include: Elevation, Height Difference, Cut and Fill Setting-out, Setting-out in Distance.

a. Elevation / Height Difference

-The SDL50 calculates height difference between backsight (BS) and foresight (FS).

- Elevation of foresight can be calculated by inputting BS elevation.

b. 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).

c. Height Measurement

-Two measurements provide the height of point B.

-Elevation can be calculated by inputting BS elevation.




Sokkia SDL50

Height accuracy (ISO 17123-2)


BIS30A staff

0.6mm (0.024in.)

BIS20/30 staffs

0.8mm (0.03in.)

BGS staffs

1.5mm (0.06in.)


BGS staffs

2.0mm (0.08in.)

Distance accuravy (D: measuring distance)


<±10mm (±0.4in.) [D10m (D33ft.)]

<±0.1% × D [10<D50m (33<D164ft.)]

<±0.2% × D [50<D100m (164<D328ft.)]

Measuring range


1.6 to 100m (5.3 to 328ft.)


from 1.5m (5.0ft.)

Measuring mode


Display resolution


0.0001/0.001/0.01m (0.001/0.01/1ft.,1/8in.)


0.01/0.1m (0.1/1ft.,1in.)

Measuring time

Single / Repeat



<2.5s × [number of measurements]



Minimum brightness condition

20 lux at the surface of staff (with natural light)


Objective aperture

36mm (1.4in.)

Magnification / Resolving power

28x / 3.5"

Minimum focus / Field of view

1.5m (5ft.) / 1º20'



Pendulum compensator with magnetic damping system

Working range


Sensitivity of circular level

10' / 2mm

Horizontal circle

Diameter: 103mm (4in.), Graduation: 1º(1gon)


Dot matrix LCD (128 × 32 dot) with illuminator


8 keys (7 keys on front panel, 1 key on side panel)

Data storage

2,000 points internal memory


RS-232C, baud rate 1,200 to 38,400 bps

Onboard programs

Elevation/Height difference/Cut & Fill setting-out/
Setting-out distance/Height measurement

Water resistance

IPX4 (IEC60529:2001)

Operating temperature

-20 to +50 (-4 to 122ºF)


W158 × D257 × H182mm (W6.2 × D10.1 × H7.2in.)

Weight with battery

2.4kg (5.3 lb.)

Standard battery

BDC46B (Rechargeable Li-ion, 7.2V, 2.45Ah)

Operating time

Approx. 16 hours at 25 (77ºF)

Product Show


Packaging & Shipping

Size: 50cm x 35cm x 40cm Weight:13kg

We can use the different international express company, usually, our first choice is DHL. if you have specified requirement , pls inform us before the order.



Our Services

Our return and warranty policy:

1.All products are inspected before shipment, if you are not satisfactory with the purchase,you can exchange the items in one week,you must contact us within 24 hour of receipt of the products and the customer should be responsible for all the charges of return and reshipping;

2.For our majority products (Auto level, Theodolite, Total Station) we are offing 1 year warranty;

3.For small issues like missing or damaged part, key board, please send us the photos, we will send the required part and related instructions to you for free;

4. For big issues in one year warranty like EDX board, main board issue. We could only ask you to send the instrument back to us. Normally we will have it fixed in 10 working days and send back to you. You and we shall take care of the corresponding shipping cost on each side. For big issues out of one year warranty, the customer should be responsible for all the cost. 


will be high appreciated after receive the items.

Since your feedback are very important for our business development. 


Company Information

With 8 years' experience in geodetic surveying and cadastration surveying, we are a professional and leading enterprise in the surveying industry in Mainland China. We specialize in the R&D and manufacturing and sales of all kinds of surveying products, including total station, electronic theodolite, electronic distance meter, automatic level, laser level, reflector prism, surveying accessory, GPS receiver, mapping software, etc. 

The marketing model advocated by us is not a simple sense of "selling products", instead, pre-sales service, services during operation and after-sales service are integrated in entire operating activities. It makes the customers feel that they purchased not only a commodity, but also a professional service. 

We welcome new and old customers from all walks of life to contact us for future business relationships and achieving mutual success!