Chris, Micrometers measure to 1/10,000 of an inch... I think I've seen them at true-value hardware for around $30. They're probably poor quality though. I have a set of dial calipers that measure to 1/1000 of an inch that I got at the swap meet for $12. I've never had to measure pinhole needles any more accuately than that.
As for purchasing one, check your local swap meet. I regularly see micrometers there, dial calipers are a more rare, and vernier calipers are pretty common. I find vernier calipers hard to read, and I think they only measure to hundredths of an inch. If you can't find one locally, try MSC industrial supply (www.mscdirect.com). Here's the part#s for some cheaper ones: PH76350016 - 0-1" micrometers, .0001" graduations - $19.95 PH76367044 - 0-4" dial calipers. .001" graduations - $16.99 PH76367069 - 0-6" dial calipers. .001" graduations - $19.95 John ----- Original Message ----- From: "Christina Z. Anderson" <tra...@mcn.net> To: "Pinhole List" <pinhole-discussion@p at ???????> Sent: Friday, February 09, 2001 4:57 PM Subject: [pinhole-discussion] needle measurer > Does anyone know where I could find a.....is it called a micrometer, a > gauge, or what....it is a small plate that has a series of holes in it that > will measure needles to the hundredth of a millimeter? I don't even know > what it is called to look for it. Apparently it is not a jeweler's item, > and is not available at the hardware store, because I have tried both places > (unless I want to measure drill bits). > Chris > > > _______________________________________________ > Pinhole-Discussion mailing list > Pinhole-Discussion@p at ??????? > unsubscribe or change your account at > http://www.p at ???????/discussion/ >
