scale design

[MATT2091]

Good morning, everyone.
question to which I personally cannot answer.
in drawing 2d it is correct to use drawing scales that are not 1:1/1:2/1:5/1:10/1:20 etc. etc.
type for example 1:1.5/1:3 or others.
Thank you in advance.

 

[falonef]

cation

# 1:3 is usata spesso

 

[MATT2091]

cation

# 1:3 is usata spesso

use a scale 1:1.25 or 1:1.5 not to go using a sheet a2 and stay on an a3 you can do or, for iso norms or other, wouldn't it be to be done?

 

[DrBarde]

always preferable to use ''Classical' scales, because also the operator has appropriate tools (scalimeter) .
1:3, 1:4, 1:7 And so forth would be, of good creation to be avoided.
to use would be preferable the following:

 

[meccanicamg]

regulations prevent the use of standard scales. if different just emphasize with a line.
we often use 1:3 and 1:7 etc.
my prediction that they do not take measures from the sheet.... although often in the civil field it is still used.

 

[MATT2091]

thanks for the answers.