Hi Regis, Our hole scope isn't fiber optic, but does the trick for our multilayer boards. (I don't remember ever using it on an Inner Layer - yet.) Here's the info off the case, so it's dated. Graticules Limited Morley Road Tonbridge TN9 1RN England Tel. 0732 359061 Fax: 0732 770217 Best of Luck! Hans ~~~~~~~~ Hans M. Hinners Materials (& Process!) Engineer Warner Robins - Air Logistics Center/Avionics Production Division Manufacturing Branch (LYPME) 380 Second Street, Suite 104 (Building 640) Robins AFB, GA 31098-1638 912-926-1970 (Voice) 468 - 1970 (DSN) 912-926-7164 (Fax) mailto:[log in to unmask] > -----Original Message----- > From: Regis Froats [SMTP:[log in to unmask]] > Sent: Wednesday, March 01, 2000 12:27 > To: [log in to unmask] > Subject: [TN] Fiber Optic Microscope > > Does anyone know of a microscope equipped with fiber optics to inspect the > barrel of vias in a PCB? > > -- > Regis Froats <[log in to unmask]> > Process Engineer - Herco Technology Corp. > 13330 Evening Creek Drive North > San Diego, Ca. 92128 > Pho:858.679.2800 - Fax:858.679.7565 ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################