Top quality C. Plath Merkur and Venus compasses with glass dome guaranteed for life available in black or white. Specify flush surface mounting or bracket mounting. C. Plath Merkug Compass Specifications: Full spherical construction with internal gimbal system. Accuracy of indication: less than or equal to 1Ý. Lag error: less than or equal to 2Ý. Oscillation period: greater than or equal to 4.7 sec. The above values exceed the ISO norm (International Organization of Standards). Temperature range: -22ÝF to 158ÝF. 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 5Ý 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 VZE.) Apparent card diameter: 4-3/4" (120mm). High speed/highly dampened. For horizontal flush mounting. 3 lubber lines.
