Number of parallel light pipes:Two

Length of lens cone of parallel light pipes: 530MM . Effective aperture: 57MM

Focal length of parallel light pipes: F=550mm

Scale of cross-hairs board: minimum: 30’’, maximum: 10'

Shortest sighting distance: 2M horizontal angle.

Amplification factor: *5.7-7    resolution ratio: about 3''

Field angle: 10°20'

Adjustable range of parallel light pipes:  ≥60',

Observation sighting distance: 15- 20cm

Maximum working range of up-down working table: ≥250mm(including the aperture)

Precision of level: round bubble level at the base: △≤8'' /

Volume :1100mm long, 450mm wide, and 68mm

Weight: gross weight: 115KG, net weight: 95KG

Power voltage: :4.5～6.0V 2.1W    I=10A

Tianjin Jewel Electronic Instrument Co.,Ltd is established in 1995, was a high-tech enterprise specialized in design and producing instrument.
Company located in Tianjin High-tech Huayuan Industry Zone, more than 2000 square meters workshops and products R&D office.
All of our products are made and assembled by ourselves, from the beginning of the company till now, we've invented and achieved many product patents, besides, because of our products with perfect quality and very competitive prices, we also awarded with very good reputation by users from home and abroad.