vee ee et - vos a me EMU-4...The ‘New Look’ in Electron Microscopes ie a IRe MET FAL adh eae aE Front-loaded magazine holds 6 cassettes hich plate size is best for electron micrographs ? Thebestplate size is a standardsize, for only a standardsize gives you a selection of emulsion characteristics, is easily and quickly available in local supply and demands no premium in price. . The EMU-4 plate cassette—there are six in a magazine load—is designed with those thoughts in mind: They accommodate —interchangeably —the standard 2” x 10” spectroscopy plate or the standard 314” x 4” projector-slide plate or cut film in 4” x 10”pieces ( whichis precisely one-half of a standard 8”x 10”piece of sheet film). Since they are universally avail- able, these plates are competitively Nationwide maintenance service available from RCA Service Company. 8 DECEMBER 1967 priced, offer wide choices of emulsion types and are usually stocked at local supply houses. Using standard-size photo materials is but one of the manyfeatures of the new EMU-4. Among the others are: transistorized, modular- ized electronics; an almost-impossible-to-contaminate objective aperture; a truly universal specimen chamber; a quick-change specimen airlock and many others. For additional information, write RCA Scientific Instruments, Bldg. 15-5, Camden, N, J. 08102. In Can- ada: RCA Victor Co., Ltd., Mon- treal. Overseas: RCA International Division, Clark, N, J. 07767. The Most Trusted Name in:Electronics ® 1263