The judge of probate, when applied to, shall search for and examine any book, record or paper belonging to his office, shall furnish any person wanting the same with a copy or copies of any part thereof or of the whole or any part of any proceedings touching any estate in his care or custody as judge of probate aforesaid and shall certify the same. For such services he shall be allowed a fee at the rate of nine cents for each copy sheet of ninety words the copy furnished may contain and fifty cents for every certificate he shall so give.