﻿ MechDesigner Reference & User Interface > 2: Model-Editor, Mechanism-Editor, Part-Editor > Mechanism-Editor: > Kinematic Function-Blocks > Kinematic FB | Add Measurement FB

# Kinematic FB | Add Measurement FB

### Why use a Measurement Function-Block?

 Measurement FB: •A driven dimension•At the output-connector(s) - the dimension, its first, and its second motion-derivative.Output-Connectors: •Two output-connectors for a measurement between two Points - see more below. •One output-connector for a measurement between other sketch-elements.Measure: •Length of a Line , Radius of a Circle •Distance between: two Points, a Line* and a Point, two parallel Lines* •Angle between: two Points, two Lines*, three Points.*A Line and CAD-Line, ,You can also dimension between a sketch-element and the X-axis or Y-axis of a Part.

### Add Measurement FB

Toolbar :

Kinematics FB toolbar

Measurement FB

Menu :

Add menu > Add Measurement FB

Add :

 1.Click Kinematics FB Toolbar > Measurement FB 2.Click the sketch-element, or sketch-elements, between which you want to measure.3.Click the graphic-area.

The Measurement FB and the Measurement Dimension show in the graphic-area.

Use :

Connect a wire from the output-connector of a Measurement FB to the input-connector of a:

 •Motion-Dimension FB or Motion-Path FB - the Motion-Part or Motion-Point uses the Measurement as its motion.•Motion FB - the Measurement becomes the X-axis for the Motion, and the output from the Motion FB will be the Y-axis of the MotionNote: Message in the Feedback-Area may be: '1 Mechanism dependencies detected'. This means, that the motion of a kinematic-chain is a function of (dependent on) the motion of a different kinematic-chain.

See also :

Connecting FBs

### Measurement FB - more details

#### How to Add a Measurement FB

 STEP 1: Add menu > Add Measurement FB or Kinematic FB toolbar > Add Measurement FB Measrement FB between two Points STEP 2: Click in the graphic-area the sketch-element, or the sketch-elements, that you want to measure STEP 3: Click in the graphic-area to place the Measurement FB.The Measurement FB is near to the dimension. •To move the Measurement FB: DRAG the FB•To move the Measurement Dimension: CTRL+DRAG the FB or the Measurement Dimension.In this image: The dimension is between two Points The Measurement FB has two output-connectors when it measures between two Points The Measurement FB has one output-connector when it measures other sketch-elements. See details below for motion-values available from the output-connectors.
 Linear Distance
 Angle between Three Points
 Angle between Two Lines