Dud was the son of Ruth Gowdy Rockwell and Stanley Pickett Rockwell, inventor of the Rockwell scale.
Norman Rockwell | Richter magnitude scale | Rockwell International | Rockwell | scale | Sam Rockwell | Moment magnitude scale | Rockwell Kent | Rockwell Collins | Rockwell Automation | Fujita scale | Scale model | David Rockwell | scale model | Scale insect | Rostral scale | Rockwell Field | John Rockwell | Scoville scale | Rockwell Blake | Mercalli intensity scale | International Scale of River Difficulty | Beaufort scale | Thomas Rockwell | Synoptic scale meteorology | Supralabial scale | Small-scale agriculture | Rankine scale | moment magnitude scale | Medvedev–Sponheuer–Karnik scale |