Ertel-Werke

Ertel-Werke München 637 Double Circle Repetition Theodolite Compass Wooden Case

Ertel-Werke

SKU:

52765

Availability:

Usually ships within 1-2 business days.

Weight:

30.00 LBS

Brand:

Ertel-Werke

Model:

637

MPN:

32697

Type:

Double Circle Repetition Theodolite

SKU:

52765

Instrument Type:

Normal-Repetitions-Theodolith I

Serial Number (Internal):

32697

Horizontal Circle Diameter:

120 mm

Horizontal Circle Division:

1/3°

Horizontal Circle Vernier Reading:

30 arcseconds

Vertical Circle Diameter:

100 mm

Vertical Circle Division:

1/3°

Vertical Circle Vernier Reading:

30 arcseconds

Telescope Magnification:

18x

Objective Aperture:

23 mm

Objective Focal Length:

190 mm

Stadia Constant (K):

120

Focusing Type:

Internal focusing (Innen-Fokusier)

Level Sensitivity – Horizontal Alidade:

40 arcseconds per division

Level Sensitivity – Telescope Carrier:

40 arcseconds per division

Level Sensitivity – Vertical Circle Alidade:

25 arcseconds per division

Reversion Level – Telescope:

20 arcseconds per division

Accessories Included:

Compass, plumb bob, adjustment tools, case keys, level vial

Case Type:

Original dovetailed wooden carrying case

Country/Region of Manufacture:

Germany

Manufacturer Location:

Barthstrasse 8, München (Munich), Germany

Era / Period:

Pre-WWII, early-to-mid 20th century

Condition:

Used – Pulled from Working Environment

Seller Notes:

Includes compass, plumb bob, tools, keys, and original wooden case with internal label

Condition Notes:

Ertel-Werke 637 Double Circle Theodolite inspected and in good condition. Pulled from working environment. Includes compass, striding level, plumb bob, tools, keys, and original wooden case with spec label.