A principal engineer at my company always adds the word 'CONSTRAINED' next to a flatness callout on plastic parts for the Datum A feature, as shown in the picture attached. When I asked him about it, he explained that this allows the vendor to apply some pressure to the part when measuring...
Hi All,
Our machine uses compressed dry air to power certain sub-systems (pressurized systems such as isolation, or hydraulics) and as cooling air for hot items. If I measure the airflow coming from the regulator at the wall to the machine by installing a flow meter in line, I am measuring the...
