| 摘要 |
FIELD: adjustment of zero antennas and attachment of optical devices including optical sight. SUBSTANCE: device case has its inner surface made in the form of truncated cone accommodating ball-and-socket joint with tetrahedral shank whose faces are relatively perpendicular. Faces are engageable with cylindrical guides made in the form of adjusting and locking screws placed in hold-down flange of case on relatively perpendicular intersecting axes. Flange surface contacting ball-and-socket joint is made in the form of truncated cone. Screw surfaces contacting shank faces is spherical in shape. EFFECT: simplified design, facilitated maintenance, and improved accuracy of adjustment. 3 cl, 3 dwg
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