The DADI DE2A is a 2" digital theodolite designed for construction and surveying applications. Its absolute encoder provides 2" (0.6 mgon) angular accuracy, while the 30x telescope, dual LCD displays and single-axis liquid-electric compensation support professional field measurement. The main unit weighs 4.1 kg and includes an internal Class 2 laser plummet.

The DADI DE2A-L is a 2" digital theodolite with a built-in coaxial red laser pointer specified for targeting up to 300 m. It provides 2" (0.6 mgon) angular accuracy through an absolute encoder, together with a 30x telescope, dual LCD displays and single-axis liquid-electric compensation over a ±3' range. The main unit weighs 4.1 kg and includes an internal Class 2 laser plummet.

The DADI MPE-02L is a 2" digital theodolite with a built-in coaxial green laser pointer specified for targeting up to 300 m. It provides 2" (0.6 mgon) angular accuracy through an absolute encoder, together with a 30x telescope, dual LCD displays and single-axis liquid-electric compensation over a ±3' range. The main unit weighs 4.1 kg and includes an internal Class 2 laser plummet.

The DADI DE2A-GF500 is a long-range green-laser electronic theodolite designed for engineering alignment and angular measurement over extended distances. Its coaxial green laser pointing system provides a clearly visible reference along the telescope line of sight, with laser range options of 1 km and 1.5 km. The instrument is suited to applications such as high-rise building alignment, large-structure positioning, tower installation and other long-distance engineering measurement tasks where a visible directional reference is required.

The DE2A-AC is a high-precision autocollimating electronic theodolite developed for industrial alignment and angular calibration applications. It combines a 2″ absolute-encoder angle measurement system with an integrated autocollimation function, allowing precise observation and adjustment of angular relationships between mechanical axes, fixtures and reference surfaces. The instrument also features single-axis compensation and a 30× erect-image telescope, providing clear target observation and stable angular measurement for workshop, assembly and calibration tasks.

This page documents a second-generation DADI autocollimation theodolite developed in the 1990s for a specialized Army laboratory application involving precision angular alignment. The instrument is no longer in production. DADI still retains one surviving unit today, while the original identification label and field installation photographs are no longer available.