Here is a Precision Devices Reference Standard model PDR-6
This is used for calibrating surface roughness gauges.
It has separate surfaces marked "Calibration", "Linearity" and "Stylus Check".
See the pictures for the various specifications for these surfaces.
The new price for the current model PDR-78 is $350 from Precision Devices.
$100 or best offer, shipping included anywhere I can send a flat-rate box.
Steve
This is used for calibrating surface roughness gauges.
It has separate surfaces marked "Calibration", "Linearity" and "Stylus Check".
See the pictures for the various specifications for these surfaces.
The new price for the current model PDR-78 is $350 from Precision Devices.
$100 or best offer, shipping included anywhere I can send a flat-rate box.
Steve
