It is hereby understood and agreed that this Policy extends to indemnify the Insured’s legal liability for claim in respect of bodily injury or damage to property arising directly or indirectly out of or caused by or in connection with any plant and machinery in the physical or legal control of the Insured or used in work undertaken by or on behalf of the Insured. However, should such plant and machinery be specifically insured under any other policy for third party liability insurance, the Company will not indemnify the Insured nor be called upon to contribute under this Policy for any liability attributed to the use of such plant and machinery.