Patent ID: 6688010
Filing Date: 2004-02-10
Classification: G01B,G01C

Abstract:
A system for determining a height (h) of a horizontally aligned geodetic tool (28) having a tool center (30) above a reference area, which tool (28) is set such that the tool center (30) is situated on a plumb line (32) passing through a reference point of the reference area, and which height (h) is the distance between the reference point and the tool center (30) comprising:a spacer (20) having a retaining part (21), which spacer is removably, directly or indirectly fastenable to the tool (28) in such a way that the retaining part (21) is situated in a predetermined, unalterable, horizontal distance (b) and a predetermined, unalterable, vertical distance (d) to the tool center (30); a means for measuring the height (h) by locating said means between the retaining part (21) and the reference point, said means having a nonlinear scale which is designed using the relationship h=d+{square root over (a2âˆ’b2)}, wherein (a) is the distance between the retaining part (21) and the reference point; whereby the height (h) is determinable without any calculation, just by reading the nonlinear scale.