His Jewel of Office is the Plumb,... which is a stonemason's instrument used for ascertaining the alignment of a vertical surface. It symbolizes upright behavior among Masons.
The Junior Warden of a Masonic Lodge is the third in charge of the Lodge. The Junior Warden sits in the South, symbolic of the position of the sun at midday. His position is similar to a Second Vice-President. The Junior Warden, too,may open the lodge if the Master is unable to attend the meeting.
It is the Junior Warden's duty to arrange meals for the lodge, and, typically, the two Stewards act as his assistants in this responsibility.
The Junior Warden of a Masonic Lodge is an elected officer of the Lodge.