Yeah, the pin diameter resolution is 1 micrometer. That's pretty small. I wouldn't think the pins would be all that critical, but maybe they are. =20 Regards, Jim > -------- Original Message -------- > Subject: Re: [EE] Vacuum tube (valve) pin diameter > From: Bob Blick > Date: Wed, March 28, 2018 4:31 pm > To: "Microcontroller discussion list - Public." >=20 >=20 > I guess the tolerance is pretty close since they used so many decimal pla= ces! >=20 > Thanks to everyone for the replies. >=20 > Friendly regards, >=20 > Bob > ________________________________________ > From: piclist-bounces@mit.edu on behalf of jim > Sent: Wednesday, March 28, 2018 1:35 PM > To: Microcontroller discussion list - Public. > Subject: RE: [EE] Vacuum tube (valve) pin diameter >=20 >=20 > The IEC 67-I-12a specification calls for a 36-degree angle between the > nine pins of 1.016 mm thickness, in an arc of diameter 11.89 mm. >=20 > Regards, >=20 > Jim >=20 > > -------- Original Message -------- > > Subject: [EE] Vacuum tube (valve) pin diameter > > From: Bob Blick > > Date: Wed, March 28, 2018 11:58 am > > To: "Microcontroller discussion list - Public." > > > > > > Anyone know the spec for pin diameter of a 9 pin miniature vacuum tube = such as the 12AX7A? I'm measuring about .040" but I can't find a spec for w= hat it should be or what the tolerance is. > > > > Thanks! > > > > Bob >=20 > --=20 > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .