Here's a solution when multiple cam clamps must be closely spaced around a curved edge, and the cam levers interfere with each other: we've simply replaced the cam lever with a thumbscrew. A camless clamp!
The camless clamp allows tighter placement with easier operation and finer control of clamping pressure.
These high quality clamps are made of hardwood and steel, for years of daily use. The jaws have protective cork lining. The small clamp has 4-1/2" (114.3mm) depth; the large clamp is 8-1/2" (215.90mm) deep. Both sizes open to 8-1/4" (209.55mm) and have a width of 15/16" (23.81mm).