“to permit the Landlord or its agents or workmen at all reasonable times (Requisite Notice having been given) to enter into and upon the Demised Premises for any other purpose connected with the interest of the Landlord in the Building or the Demised Premises or its disposal charge or demise and in particular to examine the state and condition thereof and to ascertain that there has been and is no breach of or non-compliance by the Tenant with the covenants on the Tenant’s part herein contained …”