.. I am trying to selct an assembly which is a conveyor . Then select another assembly which is an idler , and place them equisdistant on conveyor. I was trying to pick a start and end point and have Solidworks calculate distance and then place the assemblys automatically, equaly placed on the original assembly. I was trying to do this with vb.net Or .macros or combination. Do you have any ideas or someplace you could point me toward.