Backscattered electron detector calibration standards

An electron microscope has the capacity to produce images in which contrast is controlled by t...

Gold particles on carbon film

This high resolution TEM test specimen is an arrangement of finely-dispersed thin gold particl...

Duplex reference specimen

An alternative and very sensitive test is by means of an alloy with two major Copper/Zinc phas...

Polystyrene latex suspension, 0.312um

Uniform polystyrene latex (size 0.204 microns) is suspended on a Formvar/Carbon grid and is us...

Fluorescent ruler

Fluorescent Scale in inches and centimetres. This metric/english plastic ruler is printed with...

Glass scales for stereo viewers

A transparent glass plate well polished and marked by the photo-printing technique. It provide...

Measure for measure book

At last, a GREAT Conversion Factor Handbook! THE conversion factor handbook - 864 ...

Micrometers

Metric and English scale micrometers with friction stop; comes in a padded plastic case.

Scale reticles for measuring magnifiers, #10

These scales are available in two different sizes; for use with the Measuring Magnifiers above...

Scale reticles for measuring magnifiers, #11

These scales are available in two different sizes; for use with the Measuring Magnifiers above...