symbols odds to me unknown

[PieroG76]

Good morning.
This is the first discussion I open and trust in your clemency and in your collaboration.
a foreign customer asks me to change a design for ppap, in particular a quota:
r1.5±0,2
wants you to change it in:
<r1,5±0,2>I have never seen quotas between < > and I find nothing doing research.
Can any of you help me?
I don't know what to answer because I don't know what he can do.
Thank you.</r1,5±0,2>

 

[falonef]

Hi.
I don't know this norm and I think it doesn't exist.

try asking the customer why he wants that change

 

[PieroG76]

Thank you, I don't think this syntax exists, but I didn't want to make a fool of the client. I think there's something wrong here.

 

[falonef]

I understand your caution.

but asking for explanations to the customer would be the best thing you can do.

unless you jump out on the forum someone who can help you

 

[Marco F inox]

This tolerance of 0.4 mm width is perfectly at the top of the zero line.
Perhaps the customer wants to highlight this fact, putting the two signs < (minor) and > (more) to the sides, that is before and after the nominal quota, but it does not make sense.
It makes no sense because there are already the most and least that attest it.
If they were two or two less, what would he write?
Moreover, such tolerance, is really gross and will hardly refer to a coupling, unless it is the plug that connects the tractor to the cart!
looking for a rule about it, I think it's time lost.