Burette's
 

Not sure if everyone knows, but you have to be careful when measuring your port and chambers volumes because most burette's will not read the same.
The standard for a class A burette is 1% and a class B burette is 2%. I have checked many and found them to be as much as 1 1/2 cc's different on a 100 cc's. I checked two of NHRA's and they were 0.8 cc's different on a 100 cc's.
This is quite alot on a port volume and depending on which one is picked up may allow you to be legal or maybe not.
So make sure you have a safety margin and don't cut it too close.
Thanks

Re: Burette's
 

That's asinine, that they would manufacture a volume checking device and condone that sort of inaccuracy. All they have to do to refine the accuracy is to move the markings on the tube.... jeesh...

Thanks a lot for posting this. I'll check out which "class" mine falls into.
Bill

Re: Burette's
 

the main difference between a A & B burette is how fine a measurement you want!!!! A class A takes the measurement out to .05 whereas a class B only goes to .10------ sorta like a vernier giving you a reading in .001 and the other one can give you a reading of .0001---- OK------Comp 387

Re: Burette's
 

Thanks for clearing that up; that makes a lot more sense.

Bill