Optical Bench Couplers The optical bench couplers are used to connect and align two or more PASCO optics benches,and also to connect and align the laser alignment bench with the optics bench.For instructions on using the couplers,see the procedure for setting up the Laser Alignment Bench in the Using the Equipment section,earlier in the manual. Adapting non-PASCO Components Using Adhesive Backed Steel Foil Adhesive backed steel foil is available in assorted sizes (OS-9148).It is easily cut and can be attached to non-PASCO components so that they will mount magnetically onto the PASCO component holders. To use the adhesive backed steel foil: *IMPORTANT:When using the adhesive backed steel,note that the adhesive on the back of the foil is strong and permanent.Position the foil correctly the first time;there's no second chance. DCut the foil to the proper size with an ordinary pair of scissors.If the scissors produce a burr in the foil,cut in such a manner that the burr is toward the adhesive(paper covered)side of the foil. 2Before removing the protective paper backing,bend the foil very slightly so that the paper-covered side is slightly concave.This will prevent the edges of the foil from peeling away once the foil is mounted. 3Remove the protective paper,align the foil over its proper position,and press down. 2121 Optical Bench Couplers The optical bench couplers are used to connect and align two or more PASCO optics benches, and also to connect and align the laser alignment bench with the optics bench. For instructions on using the couplers, see the procedure for setting up the Laser Alignment Bench in the Using the Equipment section, earlier in the manual. Adapting non-PASCO Components Using Adhesive Backed Steel Foil Adhesive backed steel foil is available in assorted sizes (OS-9148). It is easily cut and can be attached to non-PASCO components so that they will mount magnetically onto the PASCO component holders. To use the adhesive backed steel foil: ★IMPORTANT: When using the adhesive backed steel, note that the adhesive on the back of the foil is strong and permanent. Position the foil correctly the first time; there's no second chance. ①Cut the foil to the proper size with an ordinary pair of scissors. If the scissors produce a burr in the foil, cut in such a manner that the burr is toward the adhesive (paper covered) side of the foil. ②Before removing the protective paper backing, bend the foil very slightly so that the paper-covered side is slightly concave. This will prevent the edges of the foil from peeling away once the foil is mounted. ③Remove the protective paper, align the foil over its proper position, and press down