TOPCON B20 ລະດັບອັດຕະໂນມັດ
Telescope
Length: 215mm (8.46in.)
Magnification: 32x
Objective Aperture: 42mm (1.65 in)
Resolving Power: 3"
Field of View (at 100m/328ft.): 1°20' (2.3m / 7.5ft.)
Minimum Focus:
0.2m (7.9 in.) from end of telescope
0.3m (1ft.) from instrument center
Image Erect
Stadia Constant: 0
Stadia Ratio: 100
Focusing Knob: 2-speed
Sighting Aid: Peep Sight
Accuracy (1km double run leveling)
Without Micrometer: 0.7mm (0.03 in.)
With Micrometer: 0.5mm (0.02 in.)
Compensator
Type: Pendulum compensator with magnetic damping system
Setting Accuracy: 0.3”
Working Range: ±15'
Circular Level
Sensitivity: 10' / 2mm
Horizontal Circle
Diameter: 103mm (4.1in.)
Minimum Division: 1°/ 1gon
General
Water Resistance: IPX6 (IEC 60529:2001)
Operating Temperature: -20 to +50ºC (-4 to +122°F)
Size
Width 130mm (5.12in.)
Length 215mm (8.46in.)
Height 140mm (5.51in.)
Weight 1.85kg (4.1lbs.)
ຮັບສ່ວນຫຼຸດພິເສດຕາມປະລິມານ, ອັບເດດລາຄາຂາຍສົ່ງ ແລະ ການແຈ້ງເຕືອນສິນຄ້າໃໝ່ສົ່ງກົງເຖິງອິນບັອກຂອງທ່ານ.
ໂດຍການສະໝັກສະມາຊິກ, ທ່ານຍອມຮັບ ເງື່ອນໄຂການໃຫ້ບໍລິການ ແລະ ນະໂຍບາຍຄວາມເປັນສ່ວນຕົວ ຂອງພວກເຮົາ.
ເຂົ້າເຖິງຜູ້ຊ່ຽວຊານທີ່ໄດ້ຮັບການຢັ້ງຢືນຂອງພວກເຮົາໂດຍກົງ