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This U.S. Coastguard approved, Merkur SR High Speed white compass manufactured in Germany by C. Plath is the right compass for fast going craft. It is highly dampened so that it can take the vibrational abuse that occurs at high speeds. The accuracy of indication, lag error, and oscillation period all exceed the International Organization of Standards norm. Additionally, the Merkur's vibration resistance exceeds requirements of BSH (German Hydrographic Institute). This white compass features a full spherical construction with an internal gimbal system which accommodates all angles of heel without compromising accuracy. And, the oscillation-free double bottom compensates for volumetric changes. The white housing of the Merkur SR compass is seawater resistant and made of a light alloy and the super-strong glass dome is insensitive to ultraviolet rays and is guaranteed for life against cracking, crazing and yellowing under normal use. No compass cover is needed because of the glass dome construction. Other features include: •Red glare-free illumination •Concave card with clear 5 degree graduation •3 lubber lines •Optical glare guard •Power for 12 VDC illumination •White Card and Bezel •Accuracy of indication: less than or equal to 1degree •Lag error: less than or equal to 2 degrees •Oscillation period: greater than or equal to 4.7 sec •Temperature range: -22 degrees F to 158 degrees F
