Clay,
What size graduations would you need?
http://www.schlenkerenterprises.com/21-whittam_precision_scales.htm
Go to 0.1 mm with accuracy to 0.001 mm. They do custom work and claim to be able to save “hundreds” on their products compared to others. They issue a calibration cert if required.
Just not sure what size intervals that you need to calibrate the scope.
Then I found this one for $572.00 without the traceability cert.
http://www.2spi.com/catalog/magnifiers/magnification-standard-geller.php
Looks likE it might work. “The MRS-3 allows calibration of magnifications from about 10X to 50,000X”
They have options for the basic price like a retainer, and certs in X+Y or X+Y+Z dimensions.
It seems like you would not need the cert unless you want to go for an ISO lab or production certification for your shop.
Still sounds darn expensive for a ruler
🙂
http://www.agarscientific.com/catalogue/action_catalogue.asp?spx=1&sat=2&saa=11&jumpto=03LMSM
Looks like it may work, but you need to request a quote. They have all kinds of neat stuff including sample slides of all kinds of different materials. I will attach the catalog.
I could not attach it, so here is the link:
http://www.agarscientific.com/pages/catalogue-8/03_Calibration_Standards_pgs_39-84_date_17_06_10_web.pdf
Phil
.
