A hair cutting device for facilitating and enhancing the ability to cut hair. The hair cutting device comprises a first elongated guide member that includes a first surface. The first surface includes a gravity field orientation sensor, to sense angular orientation. The first elongated guide member also includes a first end and a second end. The hair cutting device also includes a second elongated guide member that includes a first end configured to selectably couple to the first end of the first elongated guide member. The second elongated guide member further includes a second end configured to pivotly couple to the second end of the first elongated guide member. The second elongated guide member includes a plate member selectably coupleable between the first and second elongated guide members. The gravity field orientation sensor is rotatably coupled to an exterior surface of the first elongated guide member, and rotates 360 degrees.