39 s modulus the maximum elastic reversible relative compression deformation u03b5 max occurs at the maximum elastic stress yield strength u03c3 y of the selected material for example for cold finished stainless steel 316 u03c3 y 310 mpa 45 000 psi e u02dc 2 u00d7 10 5 mpa 30 u00d7 10 6 psi and this value of u03b5 max is similar to 0 1 0 2 elastic compression for balls used in the prior art design shown in fig1 3 for hollow cylinder 71 shown in fig6 with the assumption that the wall thickness h u2266 0 1 r the overall relative diametrical compression along the line of action of forces p is u025b u03b4 d u03b4 2 ue89e r u2248 0 5 ue89e r eh ue89e u03c3 max 3 where u03c3 max is the highest tensile compression stress in the wall of the annular cross section caused by compression forces p and d is the outer diameter of the cross section periphery thus the maximum elastic radial compression of tube 61 is u025b max 0 5 ue89e r eh ue89e u03c3 y 4 more than five times greater than for the solid block in fig7 even greater difference is for tubes with thinner walls e g for h 0 06 r such large elastic range allows for a very large range of dimensional translational and angular adjustment of the connection in fig4 and or for using much smaller distances between the connected components small r while still maintaining the adjustability stiffness of the connection in fig4 can be varied by changing the overall length of the cylindrical segments their material e their diameter and the wall.