SOKKIA B30a
Telescope
Lenght : 214mm (8.42in.)
Magnification : 28x
Objective Aperture : 36mm
Resolving Power : 3.5"
Field of View (at 100m/328ft.) : 1°25’ (2.5m / 8.2ft.)
Minimum Focus : 0.2m (7.9 in.) from end of telescope
0.3m (1ft.) from instrument center
Image : Erect
Reticle Pattern : Cross line
Stadia Constant : 0
Stadia Ratio : 100
Focusing Knob : 1-speed
Sighting Aid : Pep Sight
Accuracy (1km double run leveling)
Without Micrometer : 1.5mm (0.08 in.)
With Micrometer : n/a
Compensator
Type : Pendulum compensator with magnetic damping system
Setting Accuracy : 0.5"
Working Range : ±15'
Sensitivity : 10' / 2mm
Horizontal Circle
Diameter : 99mm (3.9in.)
Minimum Division : 1°/ 1gon
Water Resistance : IPX6 (IEC 60529:2001)
Operating Temperature : -20 to +50ºC (-4 to +122°F)
Dimension : 130 x 214 x 140 mm
Weight : 1.5kg (3.3lbs.)