Patent ID: 7246977

Claim:
An indicating device with large graduations for a plane, said plane including a main base and a movable worktable adjustable to move up or down, said indicating device installed at a combining section of said main base and said movable worktable for displaying a displacement said movable worktable moves relative to the main base, said indicating device comprising: a graduation ruler formed as an arc and fixed to face against the upper end portion of a pointer and provided with number figures for graduations; said pointer screwed at the top of said combining section of said main base and said movable worktable to face against said graduation ruler with its upper end portion for pointing to one of said graduations and provided with gear teeth around its lower round edge; and a rack screwed fixedly under said combining section of said main base and said movable worktable and provided with gear teeth in an upper side for engaging with said gear teeth of said pointer.