Versatile – Starrett SR400 Surface Roughness Tester User Manual
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SR300 and SR400 Surface Roughness Tester
SR300 and SR400 Surface Roughness Tester
Durable
• High impact rubberized molding IP44 rated 
• Recessed, Mylar protected high durability 
touch screen
• Solid steel drive mechanism 
• Robust anti-wear gears and bearings 
• Heavy-duty Li-Poly battery 
– 2000 measurements 
– 5000 hours standby 
Versatile
• Unique 50mm stylus lift/lower
– Simple setup on any surface
• Multiple pickups available
– Small bore, groove, o-ring, etc.
• Measure in any orientation
– Even upside down
• Evaluation length up to 25mm 
• Anti-slip V-feet for flat or curved parts 
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