Yes the photocopier mirrors are front surface and it's true the newer ones are small, about the same size as used in laser printers and flatbed scanners, about 250mm long but only 10 to 20mm wide, so pretty useless for binoculars.
Got one here from an old copier, it's about 60mm wide by 350mm long(guesstimate). unfortunately it's been knocked about over the years and has a few(!) blemishes and scratches.
|