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The PHASE II SRG-2200 surface roughness tester/profilometer comes complete with a compact durable carrying case, surface roughness standard, data output software and instruction manual.
Optional vise: SRG2000-VISE
Specifications:
Roughness parameter: Ra, Rms(Rq), (ISO), Rt, Rz (DIN)
Measuring range: Ra: 0.05-10.0mm / Rz 0.1-50mm; Rms: 0.05-10.0mm / Rt: 0.1-50mm
Display Type: 1.14” IPS TFT
Cut-off lengths: 0.01in., 0.03in., 0.10in (0.25, 0.80, 2.50mm)
Filter: Gauss Digital
Tracing length: 0.23in (6mm)
Evaluation Length: 1.25mm, 4.0mm, 5.0mm
Tracing speed: 0.04in/second (1.0mm/second)
Accuracy: +/- 12% of actual Value
Pick-up stylus: Piezo-electric
Tracer tip: Diamond, radius 10mm +- 2.5mm
Memory / Transmission: 500 Values / Bluetooth
Operating temperature: 32-104 degrees F (0-40 degrees C)
Power: 1pc 1.5v AA Battery
Contact force on probe: <0.5N
Static measuring force of sensor stylus: <0.16N
Dimensions: 73 x 28 x 62mm
Weight: 0.5lbs (220g)Data Output Software is Included!

Surface Roughness Testers/ Profilometer Measurement Guide
Surface roughness, for purposes of this forum, is the result of some machining process and its effect on the material surface in question.
Skid type surface roughness testers / profilometers are common instruments used on the shop floor. A diamond stylus is traversed across the specimen and a piezoelectric pickup records all vertical movement. Peaks and valleys are recorded and converted into a known value of a given parameter.
Parameters differ in how they approach looking at peaks and valleys. The most popular parameter is “Ra”. Ra is commonly defined as the arithmetic average roughness. While the Ra parameter is easy and efficient, there are other parameters that can be more specific and useful depending on the application requirements. It is the parameters that enable us to define surface roughness.
Today, for the purpose of checking Ra values, the use of portable, hand held, surface roughness testers /profilometers are not only economical, but are digital and easy to use. These surface roughness testers /profilometers are a given necessity for any shop floor that receives work with Ra surface finish requirements.

