Applies to the installation, adjustment or repair of all types of office machines such as computers and related equipment, copy machines, fax machines. Insured must engage in operations away from the shop. Also includes installation, inspection, adjustment and repair of cash registers, scales of the counter type variety, soap dispensers and x-ray equipment. Contemplates specialists installing telephones and telephone systems (not bona fide telephone companies). Refer to code 3574 for mfg., code 5146 for installation of furniture or fixtures in offices and stores, code 7613 for contractors engaged in installation, replacement, removal and maintenance of internal and external telephone, cable TV and internet service connection lines.