INSTALLING, MAINTAINING, SERVICING AND REPAIRING OF POINT OF SALE ACCOUNTING MACHINES PRIMARILY DESIGNED FOR USE BY THE RETAIL FAST-FOOD SERVICE INDUSTRY, DATA CAPTURE TERMINALS FOR COMPUTER ACCESS GENERALLY-NAMELY, CREDIT AUTHORIZATION, ELECTRONIC FUNDS TRANSFER AND CHECK CASHING AUTHORIZATION, OFFICE COMPOSING AND PHOTOCOMPOSING MACHINES, REPRODUCTION MACHINES INCLUDING ELECTROPHOTOGRAPHIC AND DIAZO PRINTING MACHINES, MICROFILM AND MICROFICHE PROCESSING MACHINES, PARTS THEREOF AND ACCESSORIES THEREFOR