Rule 3110. Where the deposition is to be taken within the state. A deposition within the state on notice shall be taken: 1. when the person to be examined is a party or an officer, director, member or employee of a party, within the county in which he resides or has an office for the regular transaction of business in person or where the action is pending; or 2. when any other person to be examined is a resident, within the county in which he resides, is regularly employed or has an office for the regular transaction of business in person, or if he is not a resident, within the county in which he is served, is regularly employed or has an office for the regular transaction of business in person; or 3. when the party to be examined is a public corporation or any officer, agent or employee thereof, within the county in which the action is pending; the place of such examination shall be the office of any of the attorneys for such a public corporation or any officer, agent or authorized employee thereof unless the parties stipulate otherwise. For the purpose of this rule New York city shall be considered one county.