20 SPECIFICATIONS
20-3
Electronic Angle Measurement
Method: Absolute reading
Detecting system: Horizontal : 2 sides
Vertical: 2 sides
Minimum reading
GPT-8001A/8001: 1"/0.5" (0.5mgon/0.1mgon, 5mmil/2mmil) reading
GPT-8002A/8002*: 1"/0.5" (0.5mgon/0.1mgon, 5mmil/2mmil) reading
GPT-8003A/8003: 5"/1" (1mgon/0.2mgon, 20mmil/5mmil) reading
GPT-8005A/8005: 5"/1" (1mgon/0.2mgon, 20mmil/5mmil) reading
*Minimum reading of GPT-8002A/8002 will be differed by the market.
Accuracy(Standard deviation based on DIN 18723 )
GPT-8001A/8001: 1" (0.3mgon )
GPT-8002A/8002: 2" (0.6mgon )
GPT-8003A/8003: 3" (1mgon )
GPT-8005A/8005: 5" (1.5mgon )
Diameter of circle: 71mm
Tilt Correction
Method: Automatic vertical and Horizontal index
: Liquid type
Compensating Range: ±4'
Correction unit: 1"(0.1mgon)
Others
Instrument height: 196mm (7.7 in) Base unit detachable
(Height from the tribrach dish to the center of telescope)
Level sensitivity
Circular level: 10'/2mm
Plate level: 30"/2 mm
Optical Plummet Telescope
Magnification: 3 x
Focusing range: 0.5m to infinity
Image: Erect
Field of view: 4°
Laser Plummet (only for Laser plummet type)
Light source: LD (Visible laser)
Wave length: 633nm
Out put: 1mW maximum
Laser class: CLASS 2 (ll) laser product
Dimension: 325 (H) x 229 (W) x 211 (L) mm
(12.8 (H) x 8.9 (W) x 8.3 (L) in)
Weight
GPT-8000A series (with battery): 7.7kg ( 17.0 lbs)
GPT-8000 series (with battery): 7.5kg ( 16.5 lbs)
Plastic carrying case: 5.4kg ( 11.9 lbs)
Durability
Protection against water and dust: IP54 (with BT-56Q)
(Based on the standard IEC60529)
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