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Draw Object (inches) in drawing with metric unit

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URL: https://www.cadforum.cz/forum_en/forum_posts.asp?TID=11157
Printed Date: 05.Sep.2026 at 09:21


Topic: Draw Object (inches) in drawing with metric unit
Posted By: sadiq3210
Subject: Draw Object (inches) in drawing with metric unit
Date Posted: 08.May.2015 at 20:01
Hi.
Suppose there is a layout of room created in autocad 2007 with units in "meters".
Now if i have to draw a table in room that have a dimention of (3ft 2inch X 6ft 5inches),
please explain step by step how to draw this table. 

NOTE: method without using SCALE command will be appreciated.


Replies:
Posted By: John Connor
Date Posted: 08.May.2015 at 20:32
Use a metric to imperial conversion method of some sort.  I think there are one or two lisp routines that might do the trick but I don't know of a specific one to recommend.  Or...find a web page that has a metric to imperial converter and keep it available during your drawing session.


-------------
"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance."

<<AutoCAD 2015>>

Posted By: philippe JOSEPH
Date Posted: 09.May.2015 at 13:58
Hello sadiq3210 ( and John ), as you have AutoCAD2010 you can set units on your files ( command UNITS ).
Then if you set correctly all your files you can insert ( and not copy/paste ) any file into an other and have the  objects in the good relative scale without having to scale them.
You can also work in the same file in different units: set the UNITS in feet and work in feet, set the UNITS in meters ans work in meters.
I would recommand not to change often in the same file because you will necessary forgot the good unit at a moment.
You are talking of 3 feet 2 inches x 6 feet 5 inches; then if you want to work with "fractionnary inches" you will have to learn about how to enter correctly these dimensions on your keeboard, take a look in you AutoCAD help ( F1 ) to do this with a search with the word : UNITS. 
Eventually take a look at my file FEET-METERS.dwg in the CAD/BIM Blocks library.
It will explain also how to set an alternative dimensions in the DDIM command ( 1 inch = 25.4 mm , 1 mm = 0.3937.... inches ) that will be writen in parentheses after the dimension.
Please tell us if this helped or not and remember that you will allways draw your file at scale 1 and only after launch a print a various scales.

Posted By: sadiq3210
Date Posted: 10.May.2015 at 10:23
In autoCAD 2007, in format tab, there is units option which brings up units window. If i select feet and then draw a line 20  units long, then in meters the line of 20 units long will also be of same length, and in case if i choose mm, the line of 20 units long will also be of same length. 

Posted By: John Connor
Date Posted: 10.May.2015 at 12:47
No surprise there.

Use these instead.

Metric to Imperial
(defun m2i (len ang /)
(strcat "@" (rtos (* len (/ 0.03937 1))) "<" (rtos ang))
)

Imperial to Metric
(defun i2m (len ang /)
(strcat "@" (rtos (* len (/ 25.4 1))) "<" (rtos ang))
)

Another series of solutions can be found here....

http://cadtips.cadalyst.com/curved-objects/metric-and-imperial-tools


-------------
"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance."

<<AutoCAD 2015>>


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