Just under 21 inches long; don't want it loose in the trunk of the miata when I need to take it along for autocross.
I could buy a bigger tool bag, but don't really like the idea of getting that big of a bag, and don't really want the torque wrench loose in the bag with a bunch of other tools.
First I looked for a bag or box made for a torque wrench, didn't have much success. I really want a soft bag, and not a box anyhow. I did find the options of the some boxes, but they're made for a specific wrench, so I was worried about fitment. Then I thought of using one of the tubes for my travel fishing rods, but the shortest one is 30 inches. I dropped the wrench into one of them, and it got stuck. Took a couple of minutes to get it loose, so that's out.
Then I thought about what other tool might need to be protected in a soft case, and started searching for 24 inch spirit (carpenter) level bags. Found a few, but they're mostly made to carry multiple sizes, up to four feet long.
Any suggestions from the hive?
Kramer
Dork
3/23/18 12:04 p.m.
I use a PVC tube, with a screw on cap on one end. There's an eye bolt thru that, so I can hang it on pegboard. My 25 year old Craftsman torque wrench looks and works like new.
Woody
MegaDork
3/23/18 6:06 p.m.
Toyman01 said:
Torque Wrench Case.
I just threw away three of those.
Thanks for the replies. I had been thinking about PVC pipe, have some laying around so I just need the end caps.
I had been looking for another option since I thought it would be loose in the trunk and didn't want to have it rolling around. Home Depot had a long tool bag that will fit the wrench even if it's in a PVC pipe.
I keep my cheap Husky in its case. 
I'm a big fan of blow mold hard cases for torque wrenches too. At the end of the day it's a precision measuring tool and I don't want it to lose its calibration because I let it bang around with some of my other tools.
That said the PVC pipe idea is very clever. If I didn't still have the factory case for my CDI wrench, that's probably what I'd be doing too.