41. All movements of the arms shall be simultaneous and on the same horizontal plane without alternating movement. 42. This sideslip flow then produces a force in the horizontal plane to turn the vehicle's velocity vector. 43. Clocking refers to the angle at which the transfer case is tilted with reference to the horizontal plane . 44. These methods include learning in a horizontal plane where children and adults share contribution in ideas and activities. 45. As the sun rises higher, the rays passing through the crystals are increasingly skewed from the horizontal plane . 46. To assure that no single particle could trigger the counters he spread them out in a horizontal plane . 47. The platform revolves in a horizontal plane and the patients beds in the cabin can simultaneously rotate vertically. 48. The spirit level is then rotated through 180 degrees in the horizontal plane , and another reading is noted. 49. We mostly tried to impose a battle in the horizontal plane and would not go into a vertical one. 50. Levels can also be used to indicate whether a vertical surface is perpendicular, or plumb, with the horizontal plane .