Microscope and Scientific Mirror Glass Made-to-measure 2mm flat round silver mirror glass for suitable microscope illumination mirrors, educational apparatus, laboratory displays and scientific restoration projects. Each circular mirror blank is precision cut in the UK and offered in 1mm diameter increments. This product is conventional rear-silvered mirror glass. It is not a calibrated first-surface optical mirror and is not intended for lasers, telescopes or safety-critical optical systems unless independently assessed as suitable. Measure the original component carefully before selecting a diameter.