Abstract: A hairdressers comb has a recess which houses a plug containing a bubble level. The level indicates the vertical, horizontal and 45 degrees positions of the comb by means of a circular passage in the comb with a hexagonal or octagonal outer wall by which the bubble position can be checked. The plug is mounted in the comb to allow rotation on the long axis of the comb enabling the user to tilt the plug to lie at 90 degrees to the plane of the comb.