CE261 Fieldwork No. 2 Exercise PDF

Cebu Institute of Technology U N I V E R S I T Y N. Bacalso Ave., Cebu City

CE261 – ____ FUNDAMENTALS OF SURVEYING 1 FIELDWORK NO. 2 (EXERCISE)

Name: __________________________ Course & Yr.: ___________ Date: ___________ I. Choose the correct answer: (3 points each) 1. This is used for fixing the direction of the line of sight, viewing the objects, and magnifying their apparent size in the field of view. Select one: a. Telescope Tangent Screw b. Eyepiece c. Focusing Screw d. Plate Level Tube e. Telescope 2. This is a locking device which is attached to the upper plate and it rotates with it. Select one: a. Needle Lift b. Upper Clamp c. Upper Tangent Screw d. Lower Clamp e. Leveling Screw 3. These screws are used for leveling the instrument by the plate levels Select one: a. Telescope Tangent Screw b. Upper Tangent Screw c. Plate Level Tube d. Leveling Screw e. Lower Tangent Screw 4. This is used to establish the upper and lower plate in a horizontal plane. Select one: a. Horizontal Vernier

b. Upper Tangent Screw c. Horizontal Circle d. Lower Tangent Screw e. Plate Level Tube 5. These are used to hold into position the horizontal axle level so that the telescope can be elevated or reversed by rotating on an axis perpendicular to the line of sight. Select one: a. Standards b. Vertical Circle c. Foot Plate d. Telescope Tangent Screw e. Telescope Clamp 6. This device is used for establishing the magnetic meridian and to allow rough checks on measured angles. Select one: a. Compass Box b. Focusing Screw c. Horizontal Vernier d. Telescope Tangent Screw e. Needle Lifter 7. This is used to hold the telescope horizontal or at any desired inclination. Select one: a. Focusing Screw b. Telescope Tangent Screw c. Telescope Clamp d. Horizontal Circle e. Telescope 8. This is also called the vertical circle slow motion screw. Select one: a. Rotating Knob b. Telescope Clamp c. Telescope Tangent Screw d. Vertical Vernier e. Eyepiece

9. This is used for the visibility of the cross hair or stadia hair. Select one: a. Optical Plummet b. Leveling Screw c. Focusing Screw d. Eyepiece e. Rotating Knob 10. It is used for attaching a string and plumb bob so that the instrument may be set exactly over a selected point on the ground. Select one: a. Plumb Line Hook b. Foot Plate c. Standards d. Outer Spindle e. Plumb Bob II. True or False: (4 points each) 1. When setting up the tripod on hillsides or along a slope, one of its legs should extend uphill and two downhill. Select one: True False 2. In setting up of tripod, the tripod head must be approximately or nearly horizontal in order to make it easier in leveling the instrument. Select one: True False 3. If the plumb bob is not centered, move the tripod for final centering of the instrument. Select one: True False 4. Before adjusting the leveling, turn the instrument until one of the plate level vials is positioned perpendicular to the line or axis through any two of the screws.

Select one: True False 5. To center the bubble of the plate level tube parallel to the axis of two leveling screws, turn the two selected screws in the same direction. Select one: True False