Compressed--18-3/8" long as shown

extended-------32-7/8 " long as shown

does pump air--and holds if you put fingers on end for a while-- but -has some  wear from time and use--

- NO DENTS in tubes--  -you tighten  knurled  knob  to get better pump pressure-

 about 1-3/8 " diameter of Hand pump Part

about 1.090 " diameter on the cylinder

about .765 " diameter on shaft tube--

ALL BRASS---except  Metal ring for strap to attach to---about 2-1/2 #