IMPA 370321-22 AZIMUTH CIRCLES
GFC series magnetic compass azimuth ring is used on marine A-class standard magnetic compass of various specifications. GFC series azimuth rings according to shipbuilding industry standard GB/T 335.
-2005 "Marine compass azimuth ring" design, manufacture and production.
1. Model.
GFC-190.
two.. Use.
In conjunction with magnetic compasses with diameters of 165 mm and 190 mm respectively, the diameters of the compass are determined. The azimuth and side angle of the target for navigation.
3. structure.
The azimuth ring is made of diamagnetic brass and is shaped as shown in the figure. The above components are: sight (including aiming hole, sight frame, reflector, reading.
Prisms, horizontal bubbles, etc.) and solar observers (including concave mirrors, prisms, horizontal bubbles, etc.).
4. Main performance.
(1) deviation: ≤ 12 cents.
(2) horizontal bubble sensitivity: the bubble moves "2" at a tilt of 20 minutes.
5. External dimensions and weight.
(1) GFC- 190: inner diameter "247", 1.7"
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