7A WORTHBASE RUMIT FIGURE 5,8-5 Runit Base Line Observing procedure consisted of adjusting the intensity of the station lights to the minimum which could be observed and thereby obtaining a small target, considering the distance involved. This was done as early in the evening as sufficient darkness was obtained, and from one to three sets of six positions each were observed. Because of weather, it was sometimes possible to complete only one satisfactory set in an evening. Usually, from two to five hours each evening were spent in observing. When results obtained were within the specifications of the U. S, Coast and Geodetic Survey, no attempt was made to obtain further refinement. The strength of figures obtained for the original portion of the net was an RI of 74.4 with a maximum of 130 allowed. A maximum triangle closure of 2.5 seconds and an average closure of 1,3 seconds were obtained, This compares with a maximum of & seconds for one triangle and 3 seconds for the average closure allowed by specifications. Because of the configuration of the island, the Runit Base Line was a broken base consisting of four sections connecting the stations North Base and Runit. Traverse Station Runit, used as an angle point in the Task Force Seven Survey, was again used as an angle point in the traverse for the H & N Survey. (See Figure 5,8-5.) Standard procedure of the U. S. Coast and Geodetic Survey for second order base line measurement was used. Angles were measured with 5-65