Battery, The

The construction and use of the commercial storage battery. Transformers. (26 slides) GE. Various types of transformers; annealing furnace; winding disk coils; high voltage testing machine for sheet insulation legs and bottom yokes; interlocking legs and yoke laminations, large one and two phase core-type transformers. Transformers. $2. Long-SVE. X-Ray, The. (55 slides) GE. Development of the X-ray; construction of the X-ray tubes; applications of the use of X-ray tubes; use of X-ray in identification of diamonds; industrial applications. engineering dam. Includes some technical detail.