shayonaelect store For Sale Here isShort Vane Azimuth Circle for Magnetic CompassRegular retail price $ 895.00Specifications:Model number: GFC-190Made of non-magnetic brassInternal diameter: 247mmNet weight: 1.7KgDeviation <12'Comes in latching wooden box with handle. Closed boxdimensions are 11 3/4 in. x 11 1/2 in. x 4 1/2 in. Has rubber feet on two sidesof the box for safe storage in flat or upright position.Operation & maintenance1. In practice, put azimuth circle on the compass of samesize and aim the sighting vane at the target to be observed. When objective onthe shore is observed: look through the sighting hole, and aim the sightingwire at the target, then read the degree on the index disk of compass from theprism located under the sighting wire; When celestial body is observed: theblack reflection mirror will be used to reflect the image of the target. If thelight of target is too strong, mirror positioned on 270 degrees of the circlecan be used to reflect the light into the slot of a prism compact, which isopposite to the mirror. The degree can be read out from the reflected beamunder the prism compact.2. When reading the degrees, note that you should not touchthe circle and compass bowl.3. Error inspection of compass circle: Look through sightinghole, ensure the base line in prism compact be coincided with the extensionline of above sighting wire, otherwise, loosen the screw of prism compact toadjust the position of the prism.4. Fitted on the circle body, two screws are used to regulatethe level of the compass circle and have been adjusted correctly before beingsold. Don't loosen them.5. When the azimuth circle is used, don't touch the sightingwire. If the sighting wire is loose or broken, it must be tightened or replacedaccordingly.6. Before the azimuth circle is placed on the compass bowl,it is suggested to coat a layer of thin oil to reduce the friction betweenthem.7. Keep the instrument clean, especially prevent the mirrorand screen from moisture or pollution. The azimuth circle should be cleanedwith flannel cloth or antelope leather after use and place it in box to preventmildew.Short Vane Azimuth Circle for Magnetic CompassRegular retail price $ 895.00IMPA : 37 03 23 lm3vhp,RcmdId ViewItemDescV4,RlogId p4%60bo7%60jtb9%3Fuk%601d72f%2Bjw%60%3Elm3vhp-14188a346dc-0x102-->