I don't know if these are worth anything or not, but at this price it might be worth it to find out. On sale at Woodworker's Supply. If nothing else, they might be a nice clamp on strait edge for using a circular saw.
(Red is regular price, black is sale price.)
118-141 24" SINGLE SIDE SLIDING BAR CLAMP $ 16.99$ 7.99
118-158 36" SINGLE SIDE SLIDING BAR CLAMP $ 19.99$ 9.99
118-166 50" SINGLE SIDE SLIDING BAR CLAMP $ 27.49 $12.99
118-182 24" DOUBLE SIDED SLIDING BAR CLAMP $ 26.99$ 15.99
118-190 36" DOUBLE SIDED SLIDING BAR CLAMP $ 34.99$ 19.99
118-208 50" DOUBLE SIDED SLIDING BAR CLAMP $ 39.99$ 25.89
(Red is regular price, black is sale price.)
118-141 24" SINGLE SIDE SLIDING BAR CLAMP $ 16.99$ 7.99
118-158 36" SINGLE SIDE SLIDING BAR CLAMP $ 19.99$ 9.99
118-166 50" SINGLE SIDE SLIDING BAR CLAMP $ 27.49 $12.99
118-182 24" DOUBLE SIDED SLIDING BAR CLAMP $ 26.99$ 15.99
118-190 36" DOUBLE SIDED SLIDING BAR CLAMP $ 34.99$ 19.99
118-208 50" DOUBLE SIDED SLIDING BAR CLAMP $ 39.99$ 25.89