It is used during daylight hours. The balloon is filled to such degree that its ascent rate is known. By measuring the time period between the start of the balloon and the moment it hides in the cloud can be determined the height of the cloud base.
imbrication lines (imâ³bro brÃ´Â´ika shÉn) , lÄ«nz.n pl. 1 the seams which are formed by overlapping layers of tissue in order to close a surgical. wound. 2 slight mesiodistal ridges in the cervical third of a. tooth
centerline. 1  any line that bisects a plane figure: the centerline of a building plan. 2  a line along the center of a road or highway dividing it into separate sections for traffic moving in opposite directions. 3  Radio. the perpendicular bisector of the line connecting two radio transmitters.