SitePro 26-DT05 5-Second Digital Theodolite

SitePro DT05 5-Second Digital Theodolite

The SitePro 26-DT05 is a field-hardened digital theodolite engineered for surveyors, civil engineers, and construction layout crews who demand reliable, precise angle measurement on every job. With 5-second angular resolution, a bright digital display, and a rugged housing designed to handle dusty, wet, and rough jobsite conditions, the DT05 eliminates the manual scale-reading errors of optical instruments and dramatically speeds up daily layout and verification tasks. Whether you are running boundary lines, plumbing columns, or setting control points for a site development project, the DT05 delivers the accuracy and durability professional crews count on.

Overview & Jobsite Applications

The SitePro DT05 is built around a 5-second least count that meets the angular precision requirements for most construction, civil, and boundary surveying workflows. The dual-axis compensator keeps readings accurate even on slightly unlevel setups, while the illuminated LCD reads clearly in both bright sunlight and low-light conditions. The instrument communicates angles in degrees-minutes-seconds or gon/grad depending on workflow preference, and the horizontal circle can be set to zero or any reference bearing with a single key press — a genuine time saver during layout. The battery-efficient design supports extended field sessions without swapping cells mid-job.

Key Specifications

• Angular Resolution: 5 seconds (1.5 mgon)
• Telescope Magnification: 30x
• Objective Lens Diameter: 45 mm
• Minimum Focus Distance: 1.0 m
• Horizontal & Vertical Circle: Absolute encoder, digital readout
• Display: Dual-sided illuminated LCD
• Accuracy (Hz & V): ±5"
• Compensator Type: Dual-axis liquid tilt sensor
• Compensator Range: ±3'
• Waterproof / Dustproof Rating: IP54
• Operating Temperature: -20°C to +50°C (-4°F to +122°F)
• Battery: AA alkaline, 40+ hours typical operation
• Weight: Approx. 4.6 kg with tribrach
• Tribrach: Optical plummet, included

Key Features

• 5-second angular resolution for precise horizontal and vertical angle measurement
• Dual-sided LCD display with backlight for all-day and low-light readability
• One-key horizontal circle zero-set and hold function for fast layout referencing
• Dual-axis compensator corrects for minor leveling errors automatically
• IP54-rated housing resists dust ingress and water spray on active jobsites
• 30x magnification telescope with crosshair reticle for long-range sighting
• Degrees/gon selectable angle display to match local surveying conventions
• Optical plummet tribrach included for accurate setup over a control point
• Long battery life — 40+ hours on standard AA alkaline cells
• Carrying case included for safe transport and storage

Job Applications

Property Boundary Surveys: The DT05's 5-second accuracy is well within the tolerance required for most residential and commercial boundary retracement work. Set up over a monument, backsight a reference bearing, and turn interior angles to locate corners with confidence.

Construction Layout & Column Plumbing: Use the DT05 to establish building corners from control points, check structural column plumb in two planes, and verify that foundation formwork is square before pours. The one-key zero-set makes referencing layout lines fast and repeatable.

Site Control Networks: Establish or verify horizontal control networks on grading and roadway projects. The dual-axis compensator and 5-second resolution provide the reliability needed to close traverses and detect measurement blunders before they become costly grade errors.

Utility & Pipeline Alignment: Align pipes, conduit runs, and utility corridors by turning precise deflection angles from a centerline control point. The bright LCD and battery longevity keep the instrument productive across full-day pipeline layout sessions in remote locations.

Compatible Accessories

• SitePro Aluminum Tripod — Heavy-Duty Survey Grade
• SitePro Tribrach with Optical Plummet (Replacement)
• SitePro Surveying Rod — 25 ft Fiberglass Grade Rod
• SitePro Prism Pole with Bipod
• Plumb Bob & Centering Accessories Kit
• Instrument Carrying Case — Hard Shell Replacement

Related Guides

• How to Set Up a Theodolite Over a Control Point
• Theodolite vs. Total Station: Which Do You Need?
• Running a Closed Traverse with a Digital Theodolite
• Jobsite Angle Measurement Best Practices for Layout Crews

Frequently Asked Questions

What is the difference between a 5-second and a 20-second theodolite?

Angular resolution refers to the smallest angle increment the instrument can reliably display and measure. A 5-second theodolite like the DT05 provides four times finer resolution than a 20-second unit, which translates to tighter closure on traverses and more accurate corner stakeouts over long distances. For most boundary and construction layout work, 5-second accuracy is the professional standard.

Does the SitePro DT05 come with a tribrach?

Yes. The 26-DT05 includes a tribrach with an optical plummet, allowing you to center precisely over a control monument or nail during setup. The tribrach meets standard 5/8"-11 thread compatibility used by most surveying tripods.

Is the DT05 a total station or a theodolite?

The DT05 is a digital theodolite, meaning it measures horizontal and vertical angles only — it does not include an EDM (electronic distance measurement) module. For distance measurement, you would pair it with a separate hand-held laser rangefinder or conventional chaining. If integrated distance measurement is required for your workflow, consider upgrading to a total station.

Can the DT05 be used in rain or dusty conditions?

The DT05 carries an IP54 rating, which means it is protected against dust ingress and water spray from any direction. It is suitable for use in light rain and typical dusty construction environments. It is not rated for submersion and should be dried and stored properly after wet-weather use.