Navigation
► Home ► Products ► Surface Roughness Testing
![]()
Surface Roughness Testing (Starrett)
Downloads / Technical Support:

Product Details
Starrett Surface Roughness Testers
Easy to use and accurate, the new Starrett Surface Roughness Testers are both accurate and designed for easy measurements.
The innovative SR100 separates into two pieces to measure surface roughness. The bottom half contains the traverse mechanism which is designed for stability when placed on the surface to be measured. The upper half has a large LCD display, as well as controls and is easily hand-held for easy operation and clear viewing.
The SR200 is a powerful and versatile surface roughness tester with batch measurement capability for laboratory applications. The SR200 can calculate results even before the traverse unit returns. With up to 10 different parameter measurements, a large LCD and intuitive operation, the SR200 is a powerful yet easy to use unit that can be mounted vertically, horizontally or even bench mounted. The SR200 is also portable thanks to its battery operation (AC Adapter available) and built-in memory for PC free operation. The Starrett SR200 is available with a number of pick-ups to meet a variety of measurement requirements.*
TECHNICAL INFORMATION
SR100
Technical Specifications
Gauge range 0.008" / 200μm
Accuracy 5% of reading + 4μin / + 0.1μm
Pick up type Piezoelectric
Gauge force .007 oz. / 200mg
Stylus Diamond, Radius 200μin / 5μm
Cut off value 0.03" / 0.8mm ±15%
Filter 2CR
Traverse length 0.2" / 5mm
Traverse speed 0.08"/sec, 2mm/sec
Display units μin / μm
Battery life 5,000 operations minimum
Parameter results
Ra, Rz, Rv, Rp, Rt
Parameters Range Resolution
Ra: 1600μin / 40μm 0.4μin / 0.01μm
Rz, Rv, Rp, Rt: 7800μin / 199μm 4μin / 0.1μm
Dimensions
Overall dimensions 4.92 x 3.15x 1.5" / 125 x 80 x 38mm
Weight 7oz / 200gm
Component dimensions and condition
Min bore 2.6" / 65mm
Min diameter 1.0" / 25mm
Max temperature 95ºF / 35ºC
Nominal operating conditions
Temperature 68ºF / 20ºC
Humidity 0 to 80% non condensing
Storage conditions
Temperature 32ºF to 122ºF / 0 to 50ºC
Humidity 0 to 80% non condensing Multilingual, menu-driven (English, French, German, Italian, Spanish, Portuguese)
SR200
Pickup
Gauge range 0.012μ"/300μm
Resolution 0.04μ/0.01μm
Accuracy 2% of reading + LSD μm
Pickup type Inductive
Gauge force .005-.01 oz. / 150-300mg
Diamond stylus
Tip radius 200μ" / 5μm
unless otherwise specified
Instrument
Cut off value 0.01, 0.03, 0.3" / 0.25, 0.8, 2.5, 8mm
Filter 2CR or gaussian (selectable)
Traverse length 0.01-0.98" / 0.25-25mm
Traverse speed 0.04"/sec, 1mm/sec
Display units μm / μin
Data output RS232
Power 9V battery or (optional) power supply
Parameters
Ra, Rz, Rt, Rp, Rmr, Rpc, Rsm, Rz1max, Rsk, Rda
Storage Capacity
100 measurement results
Dimensions
Overall dimensions 5 x 3.35 x2.4"/127 x 85 x 60mm
Weight 1lb / 450gm
Nominal operating conditions
Temperature 41-104ºF / 5-40ºC
Humidity 0 to 80% non-condensing
Storage conditions
Temperature 32ºF to 122ºF / 0 to 50ºC
Humidity 0 to 80% non-condensing




