levelling device AP-281 Pentax

Including devices primary used to align the positioning level of water (Water Level) is by the ancient Iranians to be. This alignment with. the tube of the straw has been that the middle of it hole and per head it Hole small, attached to a rope will. Two people each head, the rope on a piece of wooden graded keep saying, then people in third bowl from the middle hole with water Reed  , if the water from each of the holes in the two head to the amount of product is not equal to religion., the head of tanabi that more high was located, so the bottom of the Can did up the water to  identical from the two head drain . The size of the head the wood and place the rope height difference between the two was spot on.Day of the alignment of the glass that holds the bubble was use was. In other countries the alignment of the glass has a curvature, a certain was, that in the event of horizontal, being the balance of the bubble perfectly in the middle of the alignment, was . In later years, etc., factory, manufacturer, fixtures, mapping, embedding one or two numbers align on the side of the camera, it possible to provide believed that when the bubbles align in the middle is the axis of the cue on the camera is also horizontal crafted. Thus, by moving the side axis, the sign on a horizontal surface in space to be created. With the help of this axis height difference between the two measurements can be. Thus, alignment of the optics (Optical Level) was produced. The balance on the tripod, and install with three screws set the axis indication on the camera horizontally, was, and move side camera-page horizontal in space were made.Devices leveling device just to be able to create a square, horizontal, in space were, and to determine the elevation difference of the points from the pieces, graded the wood that the same indicators are used was.Adding a page, a graded horizontal to the camera, the possibility of measuring the horizontal angles between the two stretches on the ground to this vehicle was added. A device  leveling device (new) from a few part has been formed : telescope alignment page calibrate the angle of the horizontal screw set ( in some models) leveling device , the strains of simple camera mapping are moving the telescope, it only horizontally has been to determine the elevation difference of a point from a reference height or to gain the difference in height two or more points, and goes to work.Japanese company Pentax (PENTAX) with years of experience and a history of very brilliant and full of Honor in the field of production and development of a variety of measuring equipment and mapping, model AP-281 with zoom 28 equality telescope has produced the IS. This leveling device professionals in a km benchmarking for reciprocating an error only the equivalent of 1.5 MM will show. System  magnetic, it has the range of 15 minutes the Angular, etc. deviation from plummet to compensate you and user, the line op is perfectly horizontal to view the track.AP-281 is capable of a clear picture of the target even at a distance very close to 40 cm from your offer. The application of the precise leveling in all kinds of projects-construction, road-building, educational and ...