Adlake no. 26 signal lamps lenses of outer cases holding water. Previous report K.134 dated 26.4.51 (E-026)

At the request of the L.N.R. B.& T. Engineer, a test has been carried out on a new Adlake No. 22 lamp outer case, the lens of which had been mounted in "Seelastic" to seal the joint between the lens and the metal rim. The object of the investigation was...