Letter, dated 28 October, 1947, from J. Hearmsuth? To Dr. W. N. Abbott. The writer thanks Dr. Abbott for sending him the book on the working of Scalebuoys. The one installed at the Gas Works had done wonderful work and they required very little attention.sciences, instruments - general, scalebuoy, bill ashman collection - correspondence, palmerston north city council, dr w n abbott, j hearmsuth?