Surface condition and roughness

Measurement range

Accredited measurement range:

Contact us for more information



Accredited calibrations and tests are performed under DANAK accreditation reg. No. 255 and our ISO 9001 certified quality system.

Surface quality testing

DFM can measure the surface condition of interior and exterior surfaces using a calibrated roughness gauge. The processing of profile data is carried out with the possibility of a wide range of analysis and evaluation methods.

When measuring surface quality, it is possible to calculate the various standardised R, W and P parameters in DS/ISO 4287. The roughness parameters are calculated using. a Gaussian filter according to DS/ISO 11562. Furthermore, the load curve parameters according to DS/ISO 13565-2 can be calculated.


Calculation of standardised DS/ISO 4287 parameters:

R-parameters:Ra, Rq, Rz, Rp, Rv, Rt, Rc,Rdc, Rmr,RSm, Rku, Rsk andRdq

W-parameters:Wa, Wq, Wz, Wp, Wv, Wt, Wc, Wdc, Wmr,WSm, Wku, Wsk and Wdq

P-parameters:Pa, Pq, Pz, Pp, Pv, Pt, Pc, Pdc, Pmr,PSm, Pku, Psk and Pdq

Calculation of DS/ISO 13565-2 load curve parameters

Parameters: Rk, Rvk, Rpk,Mr1andMr2


Measurement of roughness

DFM has the capability to perform surface roughness measurements over lengths up to 500 µm and amplitudes less than 10 µm. The roughness can be measured down to an atomic scale (< 1 nm). A measurement can be used for example in quality control of micromechanical and microoptical components such as lab on a chip, or finely polished surfaces for e.g. moulds used in the production of demanding components.


Custom measurements

DFM has the capability to perform many different types of roughness and surface condition measurements. We can measure on different types of objects and surfaces. Contact us if you want to know more about the possibilities.


Contact person

Jørgen Garnæs

Senior Scientist, Nano
+45 2545 9018


Do you want to be in dialogue with DFM?