The two-peg test is used to determine if the line of sight of the telescope is parallel to the axis of the bubble tube. A tilting level is set up halfway between points A and B and rod reading on both points are 1.969 and 2.161 m respectively. The level is then set up 1.50 m away from A along the extension of line AB and 53.50 from B. Then rod readings on A and B were recorded as 1.554 m and 1.728 m, respectively. Determine if the line of sight is inclined downward or upward and the amount by which the horizontal cross hair should be moved to adjust the line of sight.
The two-peg test is used to determine if the line of sight of the telescope is parallel to the axis of the bubble tube. A tilting level is set up halfway between points A and B and rod reading on both points are 1.969 and 2.161 m respectively. The level is then set up 1.50 m away from A along the extension of line AB and 53.50 from B. Then rod readings on A and B were recorded as 1.554 m and 1.728 m, respectively. Determine if the line of sight is inclined downward or upward and the amount by which the horizontal cross hair should be moved to adjust the line of sight.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The two-peg test is used to determine if the line of sight of the telescope is parallel to the axis of the bubble tube. A tilting level is set up halfway between points A and B and rod reading on both points are 1.969 and 2.161 m respectively. The level is then set up 1.50 m away from A along the extension of line AB and 53.50 from B. Then rod readings on A and B were recorded as 1.554 m and 1.728 m, respectively. Determine if the line of sight is inclined downward or upward and the amount by which the horizontal cross hair should be moved to adjust the line of sight.
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