I have a drawing that is calling for layer-to-layer registration on a printed circuit board to be measured using FIM (Full Indicator Movement). I'm familiar with using this for measuring concentricity of a shaft for example, but not sure how to apply is to a layer-to-layer requirement. Is this requirement essentially equivalent to radial true position? Mike McMaster RF Product Engineer Merix Corporation Forest Grove OR 503-992-4263 --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------