18"x24". The tech was having trouble with his equipment, which accounts for some of the time. -----Original Message----- From: Randy Bock Sr. [SMTP:[log in to unmask]] Sent: Thursday, January 30, 2003 3:00 PM To: TechNet E-Mail Forum.; Mark Hargreaves Subject: Re: [TN] Calibration/Verification of granite-surface block 4 hours. What size is the plate ?? ----- Original Message ----- From: "Mark Hargreaves" <[log in to unmask]> To: <[log in to unmask]> Sent: Thursday, January 30, 2003 2:34 PM Subject: Re: [TN] Calibration/Verification of granite-surface block > Calibration company came in to do it. They used a "leveling system" which > arrived in 3 large equipment cases. Took them more than 4 hrs. as I recall. > > The original certificate of accuracy indicates that the manufacturer > calibrated the granite headstone (surface plate) using a "Watts > Auto-Collimator". > > Mark > > -----Original Message----- > From: Franklin D Asbell [SMTP:[log in to unmask]] > Sent: Thursday, January 30, 2003 2:19 PM > To: TechNet E-Mail Forum.; Mark Hargreaves > Subject: Re: [TN] Calibration/Verification of granite-surface > block > > We'll be using this one for the same purpose, do you calibrate > in-house? If > so, what do you use to verify it...thanks... > > Franklin > > > ----- Original Message ----- > From: "Mark Hargreaves" <[log in to unmask]> > To: <[log in to unmask]> > Sent: Thursday, January 30, 2003 10:31 AM > Subject: Re: [TN] Calibration/Verification of granite-surface block > > > > Hi Franklin, > > Our granite surface plate is used strictly for warp & twist > measurement of > > pcb's (very light use). It's on our recall list. The calibration > is > rather > > expensive. I was able to move from yearly cal to 3 year cal by > downgrading > > the plate from "A" (inspection grade) to "B" (shop grade, I > believe) which > > is still well within our accuracy requirements. > > > > Regards, > > Mark Hargreaves > > > > -----Original Message----- > > From: Franklin D Asbell > [SMTP:[log in to unmask]] > > Sent: Thursday, January 30, 2003 10:57 AM > > To: [log in to unmask] > > Subject: [TN] Calibration/Verification of > granite-surface > > block > > > > Can anyone describe to me the method of > calibrating/verifying a > > surface > > block??? > > > > Also, in regards to calibration recall, would this need to > be on a > > recall > > list or would it be verify it once in it's lifetime, what > would be > a > > cause > > of initial calibration being voided... > > > > Thanks, > > > > Franklin D Asbell > > > --------------------------------------------------- > Technet Mail List provided as a free service by IPC using LISTSERV 1.8e > 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) > To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest > Search the archives of previous posts at: http://listserv.ipc.org/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 > ----------------------------------------------------- > --------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/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 -----------------------------------------------------