Originally Posted by
mikeshoup
Shopping online for a quill stem. Notice some of the stems are listed with A/B measurements. Can anyone tell me what these two numbers mean?
From the QBP Catalog :
A = the distance from the bottom of the extension to the minimum insertion mark.
B = the distance from the top of the stem to the minimum insertion mark.
In real world terms,if you put a quill stem in all the way, then pulled it out to the min. insertion mark, this would be the A measurement.