Various methods used for METHODS OF LINEAR MEASUREMENTS may be grouped as:
(i) Approximate
(ii) Using chain or tape
(iii) By optical means and
(iv) Using electromagnetic distance measurement instruments.
Approximates Methods of Linear Measurements………..
These methods are used in reconnaissance survey or to detect major mistakes committed while measuring with better methods. On smooth roads they can give results within 1 per cent error. These approximate
measurements may be by:
(i) pacing
(ii) using passometer
(iii) using pedometer
(iv) using odometer or by
(v) using speedometer.

In this method surveyor walks along the line to be measured and counts the number of steps. Then the distance measured is equal to number of steps × average length of a step. Average length of a step can be found by walking along a known length. A normal man takes a step of length 0.75 m to 0.8 m.


(ii) Using Passometer: A passometer is a watch-like instrument which is carried vertically in the
pocket of shirt or tied to a leg. It records number of steps taken. Thus the problem of counting
number of steps is eliminated in this approximate method of linear measurement.
(iii) Using Pedometer: This instrument is similar to passometer but it can record the distance
instead of number of steps. In this, zero setting and setting of step length is made before
(iv) Odometer: This instrument is attached to the wheel of a cycle or other vehicle. It records the
number of revolutions made by the wheel. Knowing the circumference of the wheel, the
distance travelled may be found.
(v) Speedometer: Odometer calibrated to give distance directly is called speedometer. This is to
be used for particular vehicle only. All automobiles are provided with speedometers. By
running the vehicle along the line to be measured distance can be found.

8 Users (1 vote)
What people say... Leave your rating
Sort by:

Be the first to leave a review.

User Avatar
{{{review.rating_comment | nl2br}}}

Show more
{{ pageNumber+1 }}
Leave your rating

Share This Story!

You may also like

No Comment

You can post first response comment.

Leave A Comment

Please enter your name. Please enter an valid email address. Please enter a message.

xu hướng thời trangPhunuso.vnshop giày nữgiày lười nữgiày thể thao nữthời trang f5Responsive WordPress Themenha cap 4 nong thongiay cao gotgiay nu 2015mau biet thu deptoc dephouse beautifulgiay the thao nugiay luoi nutạp chí phụ nữhardware resourcesshop giày lườithời trang nam hàn quốcgiày hàn quốcgiày nam 2015shop giày onlineáo sơ mi hàn quốcshop thời trang nam nữdiễn đàn người tiêu dùngdiễn đàn thời tranggiày thể thao nữ hcmphụ kiện thời trang giá rẻ

Log In is required for submitting new question.