Title:
PRE-MEASURING APPARATUS FOR GUY ANGLE OF UTILITY POLE
Document Type and Number:
Japanese Patent JPH04145301
Kind Code:
A
Abstract:
PURPOSE:To position a fixing point at the lower end of a guy by displaying the angles between the vertical line and the optical axes of the first reflecting body and the second reflecting body with their back faces arranged at an included angle 90 deg. with respect to the fixing point at the lower end of the guy. CONSTITUTION:Line members 4 serving as a reference are vertically stretched nearly at the center on the right and left opened end sections of a lens barrel 2. The first left mirror 5 and the second right mirror 6 are fixed with their back faces arranged at an included angle 90 deg. nearly at the center section in the lens barrel 2. When the mirrors 5, 6 are symmetrically located in front of eyes, both reflecting faces have 45 deg. with respect to the line of sight in oppo site directions, thus the light concurrently entering the mirrors 5, 6 from far objects on the right side and the left side is reflected by the mirrors 5, 6 in front of the eyes, and the objects can concurrently enter the visual fields of the mirrors 5, 6.
Inventors:
MORI NOBUO
Application Number:
JP27128790A
Publication Date:
May 19, 1992
Filing Date:
October 08, 1990
Export Citation:
Assignee:
MORI NOBUO
International Classes:
G01B3/56; G01B5/24; (IPC1-7): G01B3/56; G01B5/24
Attorney, Agent or Firm:
Matsubara etc.