26 ELECTROMECHANICAL INSTRUMENTS-NAMELY, DIGITAL READOUT CLOCKS AND ALPHA NUMERICAL READOUTS OF THE FOLLOWING TYPES: ALPHA NUMERIC DIGITAL INDICATORS, TELECOMMUNICATION INDICATOR BOARDS, SCORE BOARDS FOR SPORT AND INDUSTRY, TIMETABLE BOARDS FOR TRANSPORTATION INDUSTRY, NAMELY, BUS, RAIL, AND AIRPORT TERMINALS, STOCK QUOTATION BOARDS, PAGING BOARDS, FLIGHT PRODUCTION AND STATISTICAL BOARDS