Clamp "FED"
with 1/4" ball head
"FED" plant, USSR

 Very good condition, fully operational. Body has signs of age and use. 

Here I offer a very useful device - a photo clamp. It is connected to a camera with a ball head with 1/4" mount. You can fix it any obtrusive object which is thinner than 31 mm (see the last photo) or unscrew the corkscrew and screw the clamp into the wood (see photo #7-8).

Weight - 143 g
Size: 140*60*23 mm