We offer survey and drawing instruments like telescopic levelling staves, natioanl ceylon ghat tracer, natioanl plane table outfit, national bruton. The Ceylon ghat tracer. The first three forms are more commonly used and are explained in this chapter: a. Abney’s Level (Fig. ). It is the most commonly. ries offers a wide range of Ceylon Ghat Tracer (Ghattracer) to our customers as per their requirements and to the full satisfaction of them. A reliable .

Author: Brazil Tazahn
Country: Greece
Language: English (Spanish)
Genre: Business
Published (Last): 20 January 2013
Pages: 218
PDF File Size: 12.16 Mb
ePub File Size: 18.74 Mb
ISBN: 956-7-75607-669-3
Downloads: 10002
Price: Free* [*Free Regsitration Required]
Uploader: Zulkicage

If not, the instrument is out of adjustment. Place the tracing point on the original cetlon and the pencil point on the drawing sheet on which a new plan is to be made. Have one to sell?

Each set of rays forms its own images. The screw at key hole K moves the glass laterally and affects parallelism to the index glass. The Ceylon ghat tracer is extensively used for locating points on a given gradient in the preliminary survey of a hill road and also for measuring the angles of slope. The horizon glass, the lower half is unsilvered and upper half traced silvered. These are held together by a milled-head screw passing through a slider which moves in the slots. Based on a work at jimtrade.

Ceylon Ghat Tracer in Wooden Box is made using quality grade components that ensure optimum performance for longer period of time. Move the milled head screw and make the line of sight to strike the established point.

The line ceyylon the eye-hole and horizontal wire furnishes the line of sight. On one face of the instrument are marked, a scale ght lines on side ghaat the slot and a scale for rations of circles on the other. Would you like to tell us about a lower price? The upper part of the weight has a pointed edge which forms the reading index.


Continue the process until the last point is established. Main product as shown in image. The vernier is of extended type and can read angles up to 5 or 10 minutes. On the face of the instrument are marked, a scale for the ratios of plans on celon side of the slot and a scale for the ratios of solids on the other.

As shown in the figure the instrument is set feylon reduction. Mark the foot of the sight vane with a peg. Let I be the index glass fixed to the index arm IA which terminates into a vernier V capable of moving along the graduated arc A-B.

This is a simple, compact hand instrument used for locating contours, taking cross-sections etc. For enlarging a plan, interchange the tracing point and the pencil. Enlarging and Reducing Plans 4. The distance between the points at long end will be exactly thrice that between the points at the short end for enlarging a plan, teacer the distance from the plan with the points at the short end, and transfer them on the new sheet with the points at the long end ceyylon vice-versa.

Get to Know Us. The ray from signal M passes through the unsilvered portion of the horizon glass and through the telescope to the eye E.

Top 4 Instruments Used in Land Surveying |Land Surveying | Surveying

Mark these points on the corresponding square lines on the new sheet by transferring the distances by scaling or by judging by eye. For reducing a plan, first set the indices of the sliding frames at the graduations representing the required reduction and clamp them.

Be the first to review this item. To get cyelon results, it is beneficial to view directly the nearer objects and view the distant object by reflection if the two objects are at unequal distances. Don’t see what you’re looking for?


The light from the signal L strikes the index mirror at X and is reflected to Y at the horizon glass and then through the telescope to the eye.

This facilitates reading of the falling and rising gradients. Write a product review. Slide the weight ecylon the rack by means of the milled-head screw until the index reads 50 ceylno the scale. Permissions beyond the scope of this license may be available at jimtrade. Copyright Jupiter Infomedia Ltd. Move the slider until the index line coincides exactly with the division marked with a number representing the given ratio, say 3 on the scale of lines. The reading at the arc gives the required angle.

Product information Technical Details.

Top 4 Instruments Used in Land Surveying |Land Surveying | Surveying

Refer our Privacy Policy and our Security measures. Sight vane is a T-shaped staff on which is marked the height of the axis of the suspending tube above the foot of the suspending staff. This is the required point, and the line ghag the instrument station to this point lies on gradient of 1 in The bar is parallel to the tube and is at a distance of 2 to 3 cm from it.

The four arms are so arranged as to form a parallelogram having all sides equal.

Ghat Tracer, Tracer, Ceylon Ghat Tracer, Survey Equipment

The horizon glass should be at right angles to the sextant plane. Search or Enquire from manufacturers. The most accurate method for enlarging or reducing plans is to replot them from the field-notes to the required tracef.

Last modified: April 15, 2020