The results of determining the longitude of the point with the help of the OT-02 theodolite are presented. It is noted that changes in the inclination of the pipe along the height are verified by a level in the case of an alidade of the vertical circle OT-02 with an error rbO ', 03. It is shown that to determine the longitude with a weight of 4-5, the error does not exceed 0e, 10.
1 . Shheglov V. P. O vozmozhnosti ispol'zovanija instrumentov, ne imejushhih tal'kottovskogo urovnja, dlja opredelenija vremeni po sposobu Cingera. — «Bjull. Tashk. Astr, observatorii», 1935, t. 1, № 6, s. 3.
2. Cvetkov K. L. Prakticheskaja astronomija. M., Geodezizdat, 1951, s. 523.