The Model BS-3I0S is a dual trace, battery-operated, 15MHz Portable Oscilloscope of rectangular CRT with internal graticule. Weight only 4.5kgs. and 113(H) x 223(W) x 298(D) mm in size, it is an ideal oscilloscope for the field service. This BS-3I0S offers 2m V/DIV sensitivity, automatic selection of chopped or alternate mode, plus automatic selection of TV line or frame display. It further provides the choice of DC, Battery or AC line operation. Internal rechargeable batteries which provide 2 hours continuous operation. The portability and performance compatibility realized by the BS-3I0S make it most attractive for use in “ON-SITE” maintenance applications; for example Telecommunication equipment, Computers, Marine and Airborne system, Industrial control equipment, Test equipment on cars, trains, etc.