Appears in the third “craft” / “symbolic” / “blue” degree of the American York Rite (3rd degree) (“emblem of a pure heart”), but also appears in some additional degrees. There also seems to be a Mark connection.
Les Plus Secret Mysteres (1820) says:
The Altar of Incense represents the vows of a perfect Mason, always pure, & rising to the heavens.
Top: Duncan’s Masonic Ritual and Monitor (1866) by Malcolm C. Duncan
Bottom: found at an online auction