C. Plath Merkur SE Black Flush Mount Compass

Full spherical construction with internal gimbal system. Accuracy of indication: less than or equal to 1. Lag error: less than or equal to 1. Oscillation period: greater than or equal to 5 sec. The above values exceed the ISO norm (International Organization of Standards). Temperature range: -22F to 158F. Vibration resistance exceeds the requirements of the BSH (German Hydrographic Institute). Seawater resistant, light alloy housing. Super-strong glass dome, insensitive to ultraviolet radiation. Red dazzle-free illumination. Concave card with clear 5 graduation. Glass dome guaranteed for life against cracking, crazing and yellowing under normal use. Oscillation-free double bottom compensates volumetric changes. Full internal gimbal system accommodates all angles of heel without compromising accuracy (all models except VZF). Apparent card diameter: 4-3/4" (120mm).

Weight: 4 lbs. 8 oz. Three year warranty on body. Lifetime warranty on glass dome. Merkur SF For horizontal flush surface mounting. 3 lubber lines. Compensation capsule available. USCG Approved #160.014/9. 73 318 Merkur SF, Black

C. PLATH COMPASSES ALL FEATURE A REAL MINERAL GLASS DOME, WITH LIFETIME WARRANTY, IMPERVIOUS TO DETERIORATION COMMON TO PLASTIC COMPASS DOMES USED BY OTHER MANUFACTURERS.

Dimensions: Outside smallest diameter across mounting ring: 5 3/4 inches. Diameter of hole to cut for flush mounting: 5 1/2 inches. Overall height from top of dome to bottom of compass: 5 inches. Recessing depth from underside of mounting ring to bottom of compass: 2 4/5 inches.
Options for All Models: 73 137 Merkur Compensation Capsule