Specifications 21. Specifications - Sokkia SDL30 Operator's Manual

21. Specifications
Except where stated, the following specifications apply to all SDLs.
Telescope
Length
Objective aperture:
Magnification:
Image:
Resolving power:
Field of view:
Minimum focus:
Stadia ratio:
Stadia additive constant: 0
Staffs
Invar staff
The coefficient of linear expansion: α=1 x 10
Glass fiber staff
76
260 mm
SDL30: Ø45mm
SDL50: Ø36mm
SDL30: 32x
SDL50: 28x
Erect
SDL30: 3"
SDL50: 3.5"
1°20'
1.5m (5.0 ft)
1:100
BIS20: 85mm (W) x 40mm (D) x 2000mm (H)
{3.4in. (W) x 1.6in. (D) x 6.6ft (H)}
4.3kg (9.5lb.) (one staff) 17.1kg (37.7lb.)
(two staffs and case)
BIS30: 85mm (W) x 40mm (D) x 3038mm (H)
{3.4in. (W) x 1.6in. (D) x 10.0ft (H)}
5.5kg (12.2lb.) (a staff) 23.4kg (51.6lb.)
(two staffs and case)
BGS40: 58mm (W) x 28mm (D) x 4080mm (H)
(3 sections)
{2.3in. (W) x 1.1in. (D) x 13.3ft (H)}
2.4kg (5.3lb.) (one staff) 3.0kg (6.6lb.)
(a staff and case)
BGS50/50G: 58mm (W) x 28mm (D) x 5090mm (H)
(4 sections)
{2.3in. (W) x 1.1in. (D) x 16.7ft (H)}
3.0kg (6.6lb.) (one staff) 3.6kg (8.0lb.)
(one staff and case)
°
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