A multiple sump fuel sampler with catch can that includes an upper fuel sampling and testing reservoir with integral lower catch can reservoir arranged such that a self-closing valve is placed between the upper sampling reservoir and the lower catch can. The array of fastener elements forms a discrete band of fastener elements extending longitudinally along the front face of the fastener strip, and the array of gripping elements forms a discrete band of gripping elements extending longitudinally along the back face of the fastener strip. A transformation matrix describing a quadratic form representing the threaded object in may be determined to relate the reference systems. The element is generally derived from the following group of elements: Al, Si, Ti, V, Cr, Mn, Fe, Co, Ni, Zn, Ga, Ge, Zr, Nb, Cd, In, Sn, Sb. In reproducing, the camera body is rotated sideways by 90 degree.