Surface Roughness Testing

Product Details

Starrett Surface RoughnessTesters

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

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



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


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)



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


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


Ra, Rz, Rt, Rp, Rmr, Rpc, Rsm, Rz1max, Rsk, Rda

Storage Capacity

100 measurement results


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

Tags: surface roughness

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