I just received a pair of Kelty trekking poles that I ordered from Cabela's and am pretty impressed with them. They have two sections that telescope using twist locks and each has marked measurements. I believe they collapse to 27", have nice feeling cork handles and weigh 19 oz. For a pair they were 39 bucks. I took them for a test today on a training hike and they performed well and felt good. I would highly recommend them, although not battle tested yet, especially for the price.
Dave
Dave