Introducing the COCLA (No. 3180) — a compact, precise geological compass for measuring strata and linear features using the Prof. Dr. Clar method. Its dual-circle design and vertical graduation on the cover hinge allow simultaneous measurement of dip azimuth and dip angle in a single operation, quickly and reliably.

The transparent extruded acrylic glass base with circular level and hinged mirror underneath makes overhead or below-head measurements simple. The eddy current damping system ensures stable readings in only 3 seconds, significantly faster than conventional compasses — ideal for saving time in the field.

The permanent locking lever can be operated laterally, perfect for inserting the compass into narrow rock joints. The COCLA also includes ±30° declination adjustment, a sighting device for rapid coarse aimings, and deeply etched figures and graduations on the tracing edge and vertical scale made of hardened aluminium alloy.

This compass does not include a carrying case.

Key Features

• Stratum measurements using the Clar method (dual-circle) in a single operation.

• Vertical graduation on cover hinge for simultaneous dip azimuth and dip angle.

• Transparent acrylic base with circular level and hinged mirror for overhead measurements.

• Eddy current damping system: stable readings in about 3 seconds.

• Permanent magnetic needle lock operated laterally — ideal for narrow rock joints.

• Declination adjustment ±30°.

• Cover tilting up to 235° with friction screw.

• Sighting device for quick coarse aimings.

• Tracing edge (60 mm) and vertical scale deeply etched on hardened aluminium alloy.

• Distinct red North marking on needle.

• Lightweight and compact dimensions.

• Does not include carrying case.

• Made in Germany.

Technical Specifications

COMPASS CIRCLE: diameter 50 mm, graduation interval 1°, accuracy <0.1°
VERTICAL CIRCLE: diameter 25 mm, graduation interval 1°, estimation up to 30’/2 mm
DECLINATION ADJUSTMENT: ±30°
COVER TILTING: up to 235°
DIMENSIONS (closed): 74 x 96 x 25 mm
WEIGHT: 275 g