Assembly for plumb bob and line

Details Assembly for plumb bob and line Assembly for plumb bob and line

G - Physics

01

C

33/107

G01C 15/10 (2006.01)

Patent

CA 1294124

ABSTRACT OF THE DISCLOSURE The assembly includes the plumb bob and line, a cylindrical rotor having a cylindrical surface of rotation mounted eccentrically for eccentric rotation about an axis of rotation. The line is connected at one end to the rotor and at the other to the plumb bob. Means are provided for rotating the rotor in the two senses to pay out and retract or wind in the line. Means are provided for receiving and storing the bob within the casing. Side walls of the casing perpendicular to the axis of rotation closely confine the space radially of the axis of rotation beyond line rotor surface to confine the line to that space as it is winding in. Other features include a conical sheath to receive the point of the. plumb bob and arms to hold the cylindrical body of the bob; also detent means cooperating with the casing and the winding handle to hold the rotor fixed.

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