کلکسیون دوربین های مورد استفاده در نقشه برداری

[Sharim]

MEDIUM-RANGE DISTANCE METER MEDIUM-RANGE DISTANCE METER AGA, Sweden
Model : Geodimeter Model 6A

Length 360mm, Width 220mm, Height 530mm,
Telescope length 355mm

This Geodimeter Model 6A is a portable and precise medium range electro-optical distance meter capable of measuring distances up to 10 kilometres in daylight and up to 25 kilometres in darkness. The instrument transmits a light beam (wavelength 550 nm), to which is applied a modulation of approximately 30 MHz (10 m), i.e. the light is intensity-modulated. The beam is directed onto a reflector at the distant station, from which it is reflected back to the instrument. The incoming light is received by a photo-multiplier (hence converted to an electrical signal) and the difference in phase between the transmitted and received modulations is measured.
The Geodimeter basically consists of the following components: (1) Light source, (2) Electro-optical shutter, (3) Modulator, (4) Transmitting and receiving optical systems, and (5) Photo-multiplier and phase comparison unit. The light source is, for night and short-range daylight work, an ordinary tungsten-filament lamp; and for daylight operation over longer lines, a mercury-vapour lamp.
The instrument has two optical systems, one for emitting the modulated light and one for receiving this light after reflection from the reflector at the other end of the line. There is also a searchlight and a coarse sight, which are used for easier location of the reflector. The searchlight is placed under the main tube and consists of a 2 Watt bulb, placed at the focal point of the projection lens. The course sight has a field of view and a magnification selected to facilitate the reflector location, and is equipped with a reticle which is illuminated when the panel light is on.
The magnification of the "receiver" optics, which is placed in a tube coaxial with the central tube, is 28x, with a focal length of 0.6 metres and an objective diameter of 50 mm. The "transmitter" optics, located on the outside of the receiver optics, has a focal length of 0.6 metres, and inner and outer objective diameters of 55 mm and 105 mm respectively.
The power source required for the instrument is a 12 V DC battery, and the distance meters average power consumption, which depends upon the operating conditions of the thermostats and lamps, is approximately 2.5 A. The precision using the standard method of measuring, with a measuring time of about 5 minutes, is less than 5mm + 1mm/km. However, when using the precise method of measuring, the readings could take as long as 30 minutes with mean square errors of less than 1mm + 1mm/km.

Weight of instrument is 16.3 kg
Weight of transport case is 8.5 kg

[Sharim]

SEMI-ELECTRONIC TACHEOMETER
TOPCON (Japan)
Model : GTS-2 10

(Without carrying handle and clip-on battery pack) telescope length 169mm, Height 380mm, Width 195mm

This GTS-2 10 semi-electronic tacheometer is a combination of an electronic distance meter (EDM) and an optical scale-reading theodolite which has been consolidated into a single very compact and light-weight unit.
The axis of the infrared light beam and the optical line of sight are in coincidence, thus making possible accurate electronic distance measurements and angular measurements at one pointing of the instrument.
Distance measurement starts automatically, by simply pointing to the prism, with the return signal level optimised by an automatic level control system. The measured distance is displayed by light-emitting diodes (LED's) in distinct digital readout's, directly over the telescope eyepiece, while the measured angle is numbered in one degree divisions and simply read (optically) in the field of view of the optical micrometer, from left to right, to 10 seconds of arc.
In spite of it's compact size, the GTS-2 can measure distances up to 1,400 m with a single prism and 2,000 m with triple prisms, under ideal atmospheric conditions. The weight of the instrument is 6 kg (without carrying handle and clip-on battery pack).
The instrument features an accurate and fast responding automatic vertical circle indexing system. The range and setting accuracy of this system is ±5' and ±0.25", respectively. The sensitivity of the circular level is 10'/2mm and the sensitivity of the plate level is 30"/2mm. The distance measurement precision is in the order of about ±(5mm+5ppm). The measurement time in FINE mode for long distances could take as long as 7 s.

Weight of instrument and carrying case is 6.0 kg and 5.5 kg respectively
Erect telescope image
30x telescope magnification
The vertical and horizontal clamps and tangent screws are located close to each other on the same side for ideal convenience

[Sharim]

ELECTRONIC TACHEOMETER

Wild, Heerbrugg, Switzerland
Model : Wild TC1600

180 x 180 x 410 mm

Electronic tacheometer (electronic theodolite with built-in electronic distance meter). Accuracy +/- 1.5" (H and V), +/-(3 mm + 2 ppm) for distance. The instrument features a slot for an electronic data recording card. It includes a bridge structure for a Wild GAK-1 gyroscope. The battery compartment is empty. Weight (with battery) and tribrach is 6.6 kg.
The instrument comes with two padded plastic transport cases , one for use with mounted gyro bridge (350 x 280 x 490 mm) and one for the original instrument (350 x 280 x 450 mm).
The instrument has a black gunsight and belongs to the second series of TC1600 manufactured, with an EDM unit length of 3 m.

[Sharim]

ELECTRONIC TACHEOMETER

Topcon, Japan
Model : ET-1

210 X 180 X 365 mm



Electronic tacheometer (electronic theodolite with built-in electronic distance meter). Accuracy: horizontal directions +/- 2" , zenith angles +/- 3", slope distance +/-(5 mm + 5 ppm) . This instrument type was the first fully electronic tacheometer produce by Topcon. It includes a tribrach and a battery that sits on top of the standards. Measurements can be triggered without touching the instruments (use of light barriers). Weight with battery: 8.3 kg