The composition of the kit: a prism, a holder with a mount on a milestone, a target, a bag for transportation. The single-prism system has a system reflector constant of -30 mm or 0 mm. Such systems are characterized by a change in the value of the constant reflector when the prism is screwed to the opposite side. This system has a double-sided sight mark, each side of which shows the value of the system's permanent reflector.
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