WYE Level ( Y Level ) in Levelling | Definition and Procedure
2019-11-20 · WYE Level ( Y Level ) in Levelling. The difference between the dumpy level and the wye level ( Y level ) is that in the former case the telescope is fixed to the spindle while in the wye level, the telescope is carried in two vertical wye supports. The wye supports consists of curved clips. if the clips are raised, the telescope can be rotated in the wyes, or removed and turned end for end.