The cross hairs in the surveying telescope are placed

Related MCQs

• If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference to i) altitude bubble on index frame ii) altitude bubble on index frame if it is to be used as a level iii) altitude bubble on telescope iv) altitude bubble on telescope if it is to be used as a level The correct answer is
• While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is
• Cross hairs in surveying telescopes, are fitted
• In the surveying telescopes, cross hairs are fitted in
• In modern telescope internal focusing telescope is used.
• Generally, the deflection angle is measured twice, once with the telescope normal and once with the telescope reversed.
• In the surveying telescope, diaphragm is held
• The imaginary line passing through the intersection of cross hairs and the optical center of the objective, is known as
• An imaginary line joining the point of intersection of the cross-hairs of the diaphragm and the optical centre of the object glass, is known as
• When the image formed by the objective is not situated in the plane of cross-hairs,