The axis of telescope level must be

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
• 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.
• The process of turning the telescope about the vertical axis in horizontal plane is known as
• The process of turning the telescope of a theodolite over its supporting axis through 180? in a vertical plane, is called
• An axis about which the telescope can be rotated in a horizontal plane, is called
• The axis of bubble tube must be perpendicular to the vertical axis.
• 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
• The height of instrument is the height of the centre of the telescope above the ground where the level is set up.
• The real image of an object formed by the objective must lie at the centre of telescope.