How do I measure length-size of circular knitting needles, tip-to-tip
or length of cable?

Hi chunky22,

Circular knitting needles are measured tip to tip.

Found in the Homesteading Today Forum:

"I just picked up some circular knitting needles at the second hand
store, and they arent marked. How do you measure the length ? From tip
to tip, or shaft to shaft?"
(...)
"They are measured from end to end."

http://homesteadingtoday.com/vb/showthread.php?p=376981


The measurements are also described here:
Susan Bates Circular Knitting Needle 29"

"...To minimize weight and enhance stitching comfort, sizes 11 and up
have plastic shafts. Cable is clear plastic. Measurement is tip to
tip: 2 needles plus cable."

http://www.joann.com/catalog.jhtml?CATID=82325&PRODID=108505


You will also notice the needles sold at the following site are
measured from tip to tip:
http://www.handknitting.com/addi_turbo.asp


Search criteria:
measure "circular knitting needles"
measurements "circular knitting needles"
"tip to tip" "circular knitting needles"

I hope this is helpful.

Best regards,
Rainbow