Questions tagged [measurement]

Questions pertaining to measurements in Blender. Real measurements as well as Blender units are acceptable.

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63
votes
2answers
22k views

How do blender units and meters, feet, or yards correlate?

If I'm using blender game engine, how do blender units work in relation to gravity, acceleration, or weight? Is there a rough physical world equivalent?
51
votes
7answers
88k views

How to model effectively using exact measurements?

I always struggle when trying to create a floor plan or furniture. How do I model using exact measurements.
45
votes
4answers
107k views

How do I measure a distance between two points?

I would like to measure the distance between the yellow points in this image: How can I do it? My goal is to cut the cube using the plane, but I must set a precise distance between the plane and ...
26
votes
3answers
44k views

How to get selected edges length?

I have a female model and I want to know her waist width, so I select the edge loop, then use what tool? Is this only possible with python?
22
votes
2answers
17k views

Is it possible to display volume of a mesh object?

How can I display volume of any mesh object? I can display length of an edge, the area of the face, but nothing for volume. Is it possible?
19
votes
2answers
26k views

How do you access the ruler?

No matter what I select or where I look I can't find the ruler anywhere. I'm using Blender 2.74, what am I doing wrong?
18
votes
4answers
23k views

Is there any way to measure angle between edges/faces, or change the angle so that the mesh changes according to the angle we input?

These features are available in some CAD software packages. I haven't come across these features in Blender. Are they available as built-in features or add-ons? I want to be able to build a model, ...
11
votes
2answers
3k views

How to show more digits in blender when working at a small scale

How can I get more digits in the user interface for modeling. Of course we can scale up the scene always, but that is just annoying, I like to work in millimeters for example which is possible with ...
11
votes
1answer
16k views

How do you set the scale for a specific project?

For my current project, I've decided to use metric units. I am trying to work at the millimeter level, but when I create a new object (Cube) it's set to a one meter scale by default. How do I tell ...
8
votes
1answer
6k views

How to measure face size in meters, centimeters or any units which is set?

How can I measure the size of a face in edit mode?
8
votes
1answer
7k views

How do I delete a Grease Pencil ruler?

In the grease pencil menu there is an option for adding rulers and protractors. Now, as far I understand, I can remove all rulers by pressing ESC but if I press ENTER instead rulers get saved. In ...
8
votes
3answers
2k views

How to calculate specific liquid volume?

I'm new to Blender and have a question regarding modeling of realistic scaled objects. I'm modeling a complex shaped bottle and I would like to scale it (using metric values) to hold a specific volume ...
7
votes
3answers
8k views

Texture scaling to real world measurements?

Is there a method to scale a texture in relation to the measurements of the model? For example, consider an architectural model with a concrete paving. Its image texture is a "real world" photo ...
7
votes
1answer
11k views

Get surface area of a mesh?

How do I get the surface area of a mesh? Preferably no python involved.
7
votes
1answer
1k views

Picking two points on the 3d model surface to measure distances

I'm a blender n00b and this may be a wrong tool for the job, but I've found some great features in Blender (like the caliper add on), so I'm pretty sure there's a way to easily (or at least bit easier)...
6
votes
2answers
643 views

Total length of a complex curve

I have a complex curve which is a series of vertices and I would like to find the total length of all the vertices. MeasureIT can show me the length of each segment in the curve but does not seem to ...
6
votes
1answer
1k views

Move object in inches instead of feet?

Whenever I move an object in blender in unit mode(Imperial), it always make it in feet. For example, if I type G Y 12, it will move 12 feet. How can I make it move 12 inches instead?
6
votes
1answer
4k views

What is the unit of measure with the ruler tool?

When I use the ruler tool, it gives a very accurate reading, with many numbers past the decimal point. However, what am I reading? Is it giving me this in meters, centimeters, inches? And is there ...
6
votes
3answers
5k views

Quick and Precise Angle Measurement in Blender?

I'm looking for a precise way to measure angles in blender. The ruler/protractor tool is very limited with the snap to vertex frequently failing in edit mode and only showing two digits beyond the ...
5
votes
3answers
1k views

Delete all measurements

Is there a way to delete a bunch of measurements? I can't seem select them and Annotations Window is empty.
5
votes
1answer
4k views

Surface Area and Volume Measurements

I am fairly new to Blender and I'm hoping to find a way to easily calculate surface area and volume of irregular objects in Blender. I was looking into the Measureit addon, however it seems that I ...
4
votes
1answer
245 views

Is there a way to calculate the volume difference between two objects?

I'm relatively new to Blender so apologies in advance in case this is too basic of a question. Trying to come up with a way to compare two files and identify a volumetric difference between them. For ...
4
votes
2answers
6k views

Ruler/Protractor tool - change snapping values for easier snapping to vertices?

I wanted to use the Ruler/Protractor tool to measure some length for an environment scene. Is there a way to change the snapping values of the Ruler/Protractor tool? or is there a way to easily snap ...
3
votes
3answers
14k views

Can the scale tool show me the real size of the object instead of a 1 - 0 scale?

when I resize I want to see the real width\length\dept of the object instead of the x=1 y=1 z=1. Is there a way to do this?
3
votes
2answers
924 views

Make changes to the Radius of the default Circle?

How can I create a circle with a certain diameter/radius? I know there's a way, but I don't know how to.
3
votes
1answer
290 views

Set edge of an object at a precise distance from another

I'm totally new with blender, and I want to measure the space that is present between the center of an object and a second object: the first object is a road, and this is its center: the second ...
3
votes
2answers
2k views

Measurement of the “Straightened” length of a path

So, I'm having a bit of trouble with scaling. An object I'm making involves the use of a path to form a curved surface, but I need the resulting curve to be within about 1% of an exact length. So, if ...
3
votes
1answer
716 views

How can I force input to be interpreted as millimetres instead of metres?

In Sketchup for example you can chose default unit. If you chose cm, you type in 17 and the line will be 17cm. Or you can choose to type in 1.7 and the line will be 1.7cm. Or you can change to metres ...
3
votes
2answers
315 views

Different axes using completely different measurement scales?

So I have the display measurements addon enabled (I think- I was tremendously ill around the time it happened so I don't quite remember but afaik blender doesn't have native support for edge length ...
3
votes
1answer
2k views

How to get the dimension of multiple objects?

I have downloaded car models where each model consists of multiple meshes including some modifiers. I would like to determine the dimension of the set of all these objects (window, bumper, trunk, ...)....
3
votes
1answer
526 views

How can i measure projected area of any object in blender ? (Ex. shadow from top view)

I'd like to measure the area of the projected front, top or side view of an object. please give me some suggestion Thank you.
3
votes
1answer
672 views

Blender for Engineering: Numbering and naming objects in blender

I am working on technical drawings with Blender using MeasureIt. I am following for making blueprints of specifical parts this youtube tutorial, and it works great. But when I am producing "big ...
3
votes
1answer
270 views

Ruler disagrees with vertices

I select a point in edit mode, and it gives me some reasonable xyz Vertex values in the "Transform" area (for example 955, -455, 100). I select another point and I also get reasonable values (for ...
3
votes
0answers
272 views

Measure Tool - How to Copy Measurement Value to my Clipboard (Blender 2.80)?

How do I copy the active ruler/protractor's measurements to my clipboard in Blender 2.80? In Blender 2.79, pressing ⎈ CtrlC could copy the value to the clipboard, but it doesn't work this way in ...
3
votes
2answers
547 views

Getting 0 Volume for object

I am trying to calculate the volume of a 3D scanned object using the 3D Print add on. The object was captured with a structure sensor/ipad and then imported to Blender (version 2.79). The scanned ...
3
votes
0answers
3k views

Showing the dimensions of an object when rendering?

In Sketchup, we can display the dimension of a specified edge as below. Is there a way to do display that in the final render in blender?
2
votes
3answers
1k views

Blender Python convert units to imperial

I'm writing a script that needs to make geometry using imperial units. The scene is set to imperial however this has no effect on Pythons end of things. I need to know the value that equates to an ...
2
votes
1answer
736 views

How to model with precision [duplicate]

My 3D modeling skills are limited to SketchUp, so forgive my lack of experience. I don't understand how to model something, in programs like Blender, with precision when it comes to measurements. How ...
2
votes
1answer
789 views

Cycles: Is there a way to find the angle between incidence and reflection rays?

Is there any point, be it through cycles nodes, OSL, or even somewhere in the code of Cycles itself, where the angle is known between the camera/incidence ray and the reflection ray for a given bounce?...
2
votes
1answer
50 views

Why does Extrude and Inset not use the same measuring units? [duplicate]

Hello there Community, I'm modeling a simple blocky logo and want to inset and then extrude by exactly the same amount, but this doesn't happen. When I inset a face by 0.00115... and extrude then by -...
2
votes
1answer
397 views

Get edge lengths with python

How can I get the length of an edge with a script? I want to identify a face by its vertex group and get the lengths of its edges. I've gotten as far as identifying the vertex group so I can select it ...
2
votes
1answer
367 views

Getting grooves of equal width

How can I get a groove of uniform width, both horizontally and vertically, on a door (a plane)? I've used edge loops, subdividing the surface and the knife tool but I can't get the groove to be a ...
2
votes
1answer
2k views

Make the “Ruler/Protractor” measurements to appear on renders

I recently realized that blender have a "Ruler/Protractor" tool for precise measurements. Is there a way to make those measurements appear on final renders? (By the way, is there a way to customize ...
2
votes
0answers
252 views

Is there a way to do absolute measurements in edit mode?

What I'm trying to accomplish is something as simple as grabbing a line or two verts (maybe more complex objects if possible) within edit mode and then setting their scale to an absolute measurement. ...
2
votes
0answers
76 views

How many density-independent pixels is one unit of measurement in Blender 2.7x? [closed]

I would like to know how many density-independent pixels it takes to make on blender unit. Please?
2
votes
0answers
546 views

Is there a tool to check if two meshes will fit together?

I need to make a car from several parts. I created the lower body and the upper body. These parts (separated objects) will be 3D printed. I want to check if the objects fit together. I need a tool ...
1
vote
2answers
1k views

How to compute the centroid of a mesh with triangular faces without using Blender's built-in functions?

I do not want to use Blender's built-in functions for computing centroids as explained here as it seems that they do not give me the kind of centroid I expect to get. I want to compute a new centroid ...
1
vote
2answers
49 views

Exact Measurements - or resize to specific dimension

I’m pretty new to blender and started with sketchup. I find overall that it is much more powerful software that is generally not as buggy - and can be used for many more things. Still, I struggle ...
1
vote
1answer
2k views

How do I measure the distance between two UV vertices?

I am using Blender version 2.77a. I am attempting to make a paper model of a mesh that has been UV mapped, but not to scale. I need to: Measure the distance between any two vertices on a UV map Make ...
1
vote
2answers
62 views

Measurement tool incorrect against ruler in image by VARYING amounts

I'm writing asking for a little help. I used an image as a template plane underneath my 3D design. Things were going well but then I realized there was a strange phenomenon with measurements. The ...