CN201555990U

CN201555990U - Crosshairs reticle of telescope point circle

Info

Publication number: CN201555990U
Application number: CN2009202537326U
Authority: CN
Inventors: 杨红林
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-19
Filing date: 2009-11-19
Publication date: 2010-08-18
Anticipated expiration: 2019-11-19

Abstract

The utility model discloses a crosshairs reticle of a telescope point circle, comprising two straight lines which are provided with sight-distance scale marks at the same plane at the outer periphery and are perpendicular to each other and are disconnected at the cross part, a small circular point at the center, and a small circle. The center of the crosshairs reticle of the telescope point circle is the small circular point and the small circle which uses the small circular point as the circle centre. The center of the small circular point, the circle center of the small circle and the intersecting point of the two straight lines which are perpendicular to each other at the outer periphery are located at the same point. When the telescope of a measuring instrument with the crosshairs reticle of the telescope point circle is used for observing linear objects, the two lines Linear which are provided with sight-distance scale marks at the outer periphery and are perpendicular to each other and are disconnected at the center can be used for observation; for the point-shaped, round or lightening objects, the small circular point and the small circle at the center of the crosshairs reticle are adopted for observation, so as to increase the work efficiency of measurement and the measurement precision.

Description

Telescope null circle crosshair graticule

Technical field

The utility model relates to a kind of improvement technology of surveying instrument telescope crosshair graticule.

Background technology

The crosshair graticule at surveying instrument telescope ocular place is the indispensable ingredient of surveying instrument, the crosshair graticule at existing surveying instrument telescope ocular place is by in same planar band sighting distance scale mark and orthogonal two groups of rectilinear(-al)s, and the disconnection that these two groups places, straight line point of crossing that intersect vertically have forms hollow type crosshair graticules; A bit center section is made a crosslet, and the disconnection of big or small cross curve is continuous, forms little cross formula crosshair graticule; The center section that has does not disconnect directly intersecting and forms grand cross form crosshair graticule.The crosshair graticule of these forms is useful for the target of observation wire, but to observation point-like or circular target with regard to some difficulty, work efficiency and measuring accuracy that influence is measured.

Summary of the invention

The purpose of this utility model just provide a kind of can very fast aligning point-like or the telescope null circle crosshair graticule of circular target.To solve the observation of measuring at present down-hole or night to luminous surveyor's beacon point source of light or circular target.

Telescope null circle crosshair graticule, by being trapped among same planar band sighting distance scale mark outward, vertical mutually, and the two groups of straight lines that cross section disconnects and the dot and a small circle at center are formed, and the center of telescope crosshair graticule is that a dot and one are the small circle in the center of circle with the dot.Dot center, the small circle center of circle and peripheral vertical two straight-line intersections mutually are same point.

Just made the telescope null circle crosshair graticule of being convenient to observe point-like or circular target according to such scheme.

Description of drawings

Fig. 1 is a telescope null circle crosshair graticule structural representation.

Embodiment

Below in conjunction with accompanying drawing, technical scheme is specified as embodiment.

With reference to Fig. 1, telescope null circle crosshair graticule 1 periphery is by at same planar band sighting distance scale mark, mutual vertical and the two groups of straight lines 2,5 of cross section disconnection and the dot 3 and concentric small circle 4 compositions of core, the center of circle of the center of dot 3, small circle 4 and periphery vertical two groups of straight lines, 2,5 center line intersection points mutually are same point.During making, at the fixed round dot 3 of the central point of circular graticule, be the center of circle earlier, scribe small circle 4, scribe two groups of orthogonal straight lines 2,5 again, make it to disconnect near the small circle place with round dot 3.Promptly make telescope null circle crosshair graticule.

The telescope of surveying instrument has been installed the utility model null circle crosshair graticule, during the observation linear target, and available outer shroud sighting distance scale mark, two groups of straight lines 2,5 of vertical centre disconnection are observed mutually; Then adopt the dot 3 at crosshair graticule center or small circle 4 to observe to point-like, circle or luminous target, to improve work efficiency and the measuring accuracy of measuring.

Claims

1. telescope null circle crosshair graticule is vertical mutually by being trapped among same planar band sighting distance scale mark outward, and the dot (3) of two groups of straight lines (2) of cross section disconnection and core and concentric small circle (4) composition; The center that it is characterized in that telescope crosshair graticule (1) is that a dot (3) and one are the small circle (4) in the center of circle with dot (3).

2. telescope null circle crosshair graticule according to claim 1 is characterized in that the center of dot (3), the center of circle and peripheral vertical two groups of straight lines (2,5) center line intersection point mutually of small circle (4) are same point.