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The Sokkia SET-3C with model number D20842) is a legacy, non-reflectorless total station—an optical surveying instrument typically used with prisms. Although the “C” variant offers additional features, it’s broadly similar in function to other SET-3 models.

Key Features:

• Displays horizontal angle, zenith angle, slope distance, horizontal distance, height difference, and N/E coordinates via key operations.

• Includes a built-in tilt sensor allowing automatic compensation for tilt and leveling guidance through display feedback .

• Comes with an RS-232C port for data output and has a self-diagnostic function to detect errors.

• Distance measurement (to prisms) typically ranges from ~1,900 m to 2,600 m under varying visibility; maximum slope distance almost 10,000 m.

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The Sokkia SET-3C D20842 can definitely appeal to surveying instrument collectors.

Reasons collectors might value it:

• Classic late-1980s / early-1990s design — it shows the transition from pure theodolites to fully electronic total stations.

• Durable all-metal construction with a mechanical feel that’s rare in modern plastic-bodied models.

• Historical significance — Sokkia’s “SET-C” series was widely used worldwide, especially in construction and civil engineering.

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You can use it for:

• Measuring angles and distances to determine positions of points on the ground.

• Setting out points for construction projects (buildings, roads, utilities).

• Topographic surveys to create maps and elevation profiles.

• Checking alignments for infrastructure like bridges, pipelines, or railways.

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This Post Includes:

- Sokkia Set3C- D20842 total station

- One Battery

- Operator Manual

- Hard Sokkia case

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EQ# 222