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Theodolites

Historical Instrument · Discontinued

This instrument is a preserved historical DADI product from the 1990s. It is no longer in production and is presented here as part of DADI's theodolite development history.

A History of Specialized Theodolite Development at DADI

In the 1990s, DADI developed a second-generation autocollimation theodolite for a specialized Army laboratory application involving precision angular alignment. The instrument was positioned at the center of a circular reflective reference arrangement for repeated angular alignment and verification.

The original field installation photographs are no longer available, but DADI still retains one surviving unit of this second-generation instrument. The original identification label is no longer present, while the other units from the project were later dismantled.

Purpose of the Original Instrument

The instrument was developed for a laboratory environment requiring repeated angular alignment and verification. Its autocollimation configuration was used with a circular arrangement of reflective references surrounding the instrument.

Because the surviving unit no longer carries its original identification label, DADI does not publish an exact historical model number or technical specification for this instrument.

The Surviving Instrument

One original unit is still preserved by DADI today. It provides a physical record of the company's earlier work in specialized autocollimation and precision angular measurement instruments.

The photographs shown on this page are current photographs of the surviving instrument. They document the physical unit that remains in DADI's possession.

Historical Status

Period1990s
Instrument TypeSecond-generation autocollimation theodolite
Historical ApplicationSpecialized Army laboratory precision angular alignment
Production StatusDiscontinued
Surviving UnitsOne unit retained by DADI
Original Identification LabelNo longer present
Original Field Installation PhotosNot retained

From Historical Development to Current Autocollimation Theodolites

DADI continues to manufacture autocollimation theodolites today for applications including shipyard alignment, equipment installation and laboratory measurement. Current products are separate designs from this discontinued 1990s instrument.

The preserved historical unit is therefore presented as part of DADI's engineering development history rather than as a current product specification or sales model.

Frequently Asked Questions

Is this 1990s autocollimation theodolite still available?

No. This historical configuration has been discontinued and is no longer offered as a current production model.

Does DADI still manufacture autocollimation theodolites?

Yes. DADI currently manufactures newer autocollimation theodolite designs for engineering, shipyard, equipment installation and laboratory alignment applications.

What was the exact model number?

The surviving instrument no longer has its original identification label, so the exact historical model designation cannot be confirmed.

Why does DADI keep this instrument?

The surviving unit is preserved as a physical record of DADI's earlier development work in autocollimation and precision angular alignment instruments.

Explore Current DADI Theodolite Manufacturing

This historical instrument represents an earlier stage of DADI's autocollimation theodolite development. For current electronic, laser, long-range and autocollimation theodolites, see DADI's present theodolite manufacturing capabilities and product range.

View Theodolite Manufacturing

What's in the Box

DADI DTM752R Total Station (2-Second)

Hard Carrying Case

Toolkit with Cleaning Cloth (For Lens), Screwdriver and 1 Needle

Rubber Dust Blower Ball

Total Station to PC-USB Cable

2 x Rechargeable Li-ion Batteries

Battery Charger

User Manual


Surveying accessories

Tripod

J-1A

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Staff

3m

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Prism

AK18-1

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Triple
TPS30-Y1.jpg

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