My PST E7-80 has an 8" diameter

[D_O_H]

AL80 boot diameter is 7.25 Which probably makes the tank diameter around 7.2 I thought AL80's all have an 8" diameter

Sounds like you've got your measurement - the PST tank is (and should be) 7.25 as well (not 7.2).

Another mystery solved by the patrons of scubaboard.

 

[gerardnealon]

Sounds like you've got your measurement - the PST tank is (and should be) 7.25 as well (not 7.2).

Another mystery solved by the patrons of scubaboard.

OK, the pdf from pressedsteel says 7.2 but no reason to argue over that. Was I wrong in thinking all AL80 tanks have an 8" diameter?

 

[Kirkandtiger]

OK, the pdf from pressedsteel says 7.2 but no reason to argue over that. Was I wrong in thinking all AL80 tanks have an 8" diameter?

Yes

 

[gerardnealon]

Yes

OK

 

[D_O_H]

OK

And the PDF from pressed steel says 7.25, not 7.2.

 

[gerardnealon]

And the PDF from pressed steel says 7.25, not 7.2.

Not the pdf I read.

http://www.pstscuba.com/specsheet.pdf

 

[D_O_H]

Not the pdf I read.

http://www.pstscuba.com/specsheet.pdf

Sure enough. PST mentions 7.25 diameter for the E-7 tanks elsewhere on their website. An odd discrepancy.

This topic is giving me a headache.

 

[mech]

Sure you can do math to get the diameter but the best way to get a fast an accurate diameter on oddball/nominal sized things is to use two squares (like framing squares or what ever) and to possition them like calipers and just read the number.
Picture two L's as tight as you can fit them then adjust for the measurement.

 

[gerardnealon]

Sure enough. PST mentiones 7.25 diameter for the E-7 tanks elsewhere on their website. An odd discrepancy.

This topic is giving me a headache.

hahaha i know, i wasted people's time because of a stupid calculator setting. I am tired!!

 

[gerardnealon]

Sure you can do math to get the diameter but the best way to get a fast an accurate diameter on oddball/nominal sized things is to use two squares (like framing squares or what ever) and to possition them like calipers and just read the number.
Picture two L's as tight as you can fit them then adjust for the measurement.

ahh nice trick, thanks