21. See Buoyancy compensator ( diving ) # History. 22. The standard buoyancy compensator is used to control a slow ascent to the surface. 23. The closed bottom port of the M16A2 design makes the device function as a compensator . 24. It does have some dispersion, so dispersion compensator devices are used to remove this. 25. Corneal birefringence is eliminated ( in part ) by a proprietary'corneal compensator '. 26. Ballast may also be carried aboard an aircraft . For example, in buoyancy compensator . 27. One is a fleet angle compensator , which is driven automatically by the rope tension. 28. There are scope mounts available, there are compensator Barrels that come with a compensator. 29. There are scope mounts available, there are compensator Barrels that come with a compensator . 30. In order to absorb axial thermal expansion loads, it is equipped with a bellows compensator .
