I use a set of surgical loupes. For smd work you need 3.5 - 4.0x, but the major problem with cheap ones is a very small depth of field.
I have a sec of Galilaen loupes marked 3.5x, but are really 2x. They're good for general work. Once you get into 4x, you're into Keplarian loupes. I have a set of 4.0x with about a 1cm depth of field that were pretty cheap; I'm looking to change those out. The loupes are nice; you get binocular vision and 16-18 inch working distance. Paul > Date: Fri, 8 Feb 2013 13:12:27 -0800 > From: "DaveH" <[email protected]> > To: "'Discussion of precise time and frequency measurement'" > <[email protected]> > Subject: Re: [time-nuts] Nifty "MINI TIC" for DMTD > Message-ID: <CA2D1E86C3EB4F76ACE9565FD29258A0@photo> > Content-Type: text/plain; charset="US-ASCII" > > Check to see if there are any tech auctions in your area. > > Picked up a nice scope with stand and illuminator for $90 in the Seattle > area. > > Dave > > > -----Original Message----- > > From: [email protected] > > [mailto:[email protected]] On Behalf Of Dan Kemppainen > > Sent: Friday, February 08, 2013 12:25 > > To: [email protected] > > Subject: [time-nuts] Nifty "MINI TIC" for DMTD > > > > We do 0603 and 0402 with IC's at .5mm lead spacing all day > > long. Under > > stereo zoom, it's not an issue. We have 50+ year old techs who build > > this stuff all day... > > -- Paul Amaranth, GCIH | Rochester MI, USA Aurora Group, Inc. | Security, Systems & Software [email protected] | Unix & Windows _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
