SURVEY

THEODOLITE

BHI-SE-306
Qty Comments

Theodolite ST - 20E is a precision instrument to fufill most requirement of Enginnering Sureveys. Ideal in construction. for utility installation, general layout work, cadastral work, traversing triangulation and in mining.

FEATURES :

* Quality telescope with high contrast optical system fitted with coated object lens.

* Cylindrical steel axis extra long for stability.

* Erect Image for comfort and trueness.

Specifications :

Telescope

Image Erect
Length 180 mm
Magnification 20 x
Effective aperture 38 mm
Field of view 2.6 m at 100 m (1°.30')
Short focus 2.2 m
Stadia ratio 1 : 100
Stadia constant 0
Resolving power 4"

Circles

Diameters Hz   113 mm V  100 mm
Graduations 20'
Vernier reading 20"

Sensitivity of levels

Vertical circle level 1' /2 mm
Plate level 45" /2 mm

Weight (Kg.)

Instrument 5.5
Case (FRP) 2.3
Tripod (AI) 2.9

Dimension (mm)

Instrument L X W X H
Case 180 X 155 X 350
Tripod (telescopic) 5/8" X 11 tpi

 

 



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