# What is the difference between Direct measurement and Indirect measurement?

**URL:** <https://forumautomation.com/t/what-is-the-difference-between-direct-measurement-and-indirect-measurement/2970>\
**Category:** Instrumentation\
**Tags:** interviewquestions, instrumentation\
**Created:** [January 14, 2018, 3:44am UTC](https://forumautomation.com/t/what-is-the-difference-between-direct-measurement-and-indirect-measurement/2970 "2018-01-14T03:44:00Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![denizen](https://forumautomation.com/letter_avatar_proxy/v4/letter/d/848f3c/32.png) [@denizen](https://forumautomation.com/u/denizen)\
**Post date:** [January 14, 2018, 3:44am UTC](https://forumautomation.com/t/what-is-the-difference-between-direct-measurement-and-indirect-measurement/2970/1 "2018-01-14T03:44:00Z")

</div>

Broadly the measurement can be categorized in to two categories

1. Direct measurement 2. Indirect measurement

**Direct measurement**

The quantity to be measured is determined directly.

Example – Measure distance by scale

**Indirect measurement**

The quantity to be measured is not measured directly.But other related parameter is measured and inference is drawn from there.

Example – Measure distance by optical method where we use telescope to calculate distance.