Spectra DET-2

The Spectra DET-2 is a rugged digital electronic theodolite designed for fast, reliable horizontal and vertical angle measurement on construction and civil engineering sites. Featuring 2″ angular accuracy, dual backlit displays, and simple controls, it’s ideal for setting out, alignment and basic grade tasks.

Dual-Display Precision: Large, backlit LCD screens on both sides of the instrument ensure easy reading from any angle.
1-Second Resolution: Programmable 1″ or 5″ angular readings provide high-level accuracy for site layout and structural alignment.
Smart Vertical Tilt Sensor: Automatically compensates for levelling errors, ensuring vertical angles remain true on uneven ground.
Rechargeable Versatility: Includes a rechargeable battery pack and backup alkaline pack for 36 hours of continuous field operation.
Intuitive Six-Button Interface: Simplifies complex measurements like percent of grade or horizontal angle resets for faster site workflows.

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FAQs

With robotic total stations available, is a theodolite still commonplace on-site?

Yes. While robotic total stations are powerful, they are often “overkill” for simpler daily tasks. The DET-2 remains a site staple because it is faster to set up for basic 90-degree turns or bolt alignments, more cost-effective, and doesn’t require a specialised engineer. It is the “go-to” tool for groundworkers and steel erectors who need precision without coordinate system complexity.

What is the primary function of the Spectra DET-2?

The DET-2 is a digital electronic theodolite used to measure horizontal and vertical angles with high precision (2″ accuracy). It is essential for site layout tasks such as establishing 90-degree reference lines, aligning anchor bolts, placing steel columns, and checking the plumb of vertical structures.

Can I hire the Spectra DET-2 from PQS Survey Ltd?

Yes, we offer the DET-2 for hire as a complete, site-ready kit. Hiring from PQS Survey Ltd ensures you receive a fully calibrated instrument with dual power options, a plumb bob, and a heavy-duty tripod if required. It’s an ideal way to get precision alignment for specific project phases without a long-term capital investment.

How accurate is the DET-2 for professional construction?

The instrument features 2-arc-second angular accuracy, providing the precision needed for high-spec engineering. The display resolution can be adjusted to 1″ or 5″ depending on whether you need absolute precision or faster, “rounded” readings for general site work.

Does the DET-2 feature automatic tilt compensation?

Yes. The unit includes a vertical axis tilt sensor that automatically compensates for slight misalignments of the instrument. This ensures that vertical angle readings remain accurate even if the tripod experiences minor movement on soft ground.

How does the dual-display system help the operator?

The DET-2 is equipped with large, backlit LCD screens on both sides of the unit. This allows the operator to read angles easily regardless of the instrument’s orientation, eliminating the need to walk around the tripod or crane your neck during “double-face” measurements.

What power options come with the DET-2?

The instrument includes a NiMH rechargeable battery pack and charger for daily use, but also comes with a backup alkaline pack that takes four standard AA batteries. This ensures the kit stays operational even if the main pack is not charged overnight.

Can it be used for setting gradients and slopes?

Yes. With a single button press, the vertical angle display can be converted into a percentage of grade. This is incredibly useful for setting out drainage runs or checking the fall on a ramp without needing to perform manual trigonometric calculations.