WebApr 24, 2024 · Cross-staff. The cross-staff is a simple instrument that is widely used in surveying operations. It is suitable for setting out right angles on a required survey line. It has three types: Open cross-staff; French cross-staff; Adjustable cross-staff; The most commonly use out of these is the open cross-staff. 1)Open cross-staff Web(b) By setting a right angle in the ratio 3 : 4 : 5 (c) By setting a right angle with the help of builder’s square or tri-square (d) By setting a right angle by cross-staff or optical … east hampton cinema WebMar 18, 2024 · For locating a number of points on a long survey line. To set out offset lines at right angles. To indicate whether the line is vertical or not. To measure the slope of … WebHere is a brief description of how I made an offset staff, 3 station staves, and a surveyor's cross. An offset staff is used for measuring distances of 10 links or less, to a precision of 1/10th of a link. This is used along with … east hampton cinema 6 WebSurvey 1. The instrument used for setting out an offset at right angles is called A. Open cross staff B. French cross staff C. Optical staff D. Adjustable cross staff WebMar 5, 2024 · To set out the perpendicular from a given point. Procedure: a) For cross staff: 1. First of all, the point on the survey line is fixed. 2. The cross-staff is held … clean wipe symantec 14.3 free download WebDec 16, 2024 · 1. Open cross staff is used to setting out an offset at right angle. 2. French cross staff is used for setting out an offset at angle of 45 degree. 3. Optical …

WebMar 15, 2024 · ANSWER. 64. The instrument used for setting out an offset at a right angle, is called. (a) open cross-staff. (b) french cross-staff. (c) adjustable cross-staff. … WebThe adjustable cross-staff is used for setting out an offset [A]. at an angle of 45? [B]. at an angle of 60? [C]. at a right angle [D]. at any angle east hampton connecticut post office WebJun 23, 2024 · Used for setting out straight lines and offset lines at 90 degree. 4. CROSS STAFF: Consists of either a frame or a box with two pairs of vertical slits and is mounted … Web1. Open cross staff is used to setting out an offset at right angle. 2. French cross staff is used for setting out an offset at angle of 45 degree. 3. Optical square is used for … east hampton connecticut map WebThe adjustable cross-staff is used for setting out an offset The deflection angle for any chord is equal to the deflection angle for the proceeding chord minus the tangential angle for that chord. When the position of a point is to be located accurately by a perpendicular offset, the direction of perpendicular is set out by means of WebSep 17, 2016 · 9. 9 PROCESS OF SETTING OUT STEP 1: SETTING OUT THE BUILDING LINE Two square offset lines are set from the kerb to the position of the building line. … cleanwipe tool broadcom WebAn open cross-staff is commonly used for setting out The adjustable cross-staff is used for setting out an offset An optical square is used for the same purpose as the cross-staff, but it is more accurate. Which of the following angles can be set out with the help of French cross staff? It is possible to set out angles of 0’ to 360’ with ...

WebMar 1, 2014 · Cross staff: The cross staff is used for a) Finding out foot of the perpendicular from a given point to a lineb) Setting right angle at a given point on a line There are three forms of cross staff Open cross staff The French and The Adjustable Optional Square Prism square, the first one is commonly use. 1. Open Cross Staff: It is … cleanwipe symantec removal tool download windows 7 WebCross staff is an instrument used for. An optical square is used for the same purpose as the cross-staff, but it is more accurate. While viewing through a level telescope and … cleanwipe tool download