Surtronic Duo overview
What it does
The Surtronic Duo is a superior portable surface roughness tester 
that measures multiple roughness parameters with a 1-button click. 
Roughness measurement parameters Ra, Rz, Rp, Rv, Rz1max, Rsk, Rq 
& Rku are displayed on a brightly lit intuitive 2.4” LCD colour display. 
Its rechargeable battery operation makes it a convenient way of 
performing fast, easy and precise on-the-spot measurements in almost 
any environment and surface.
How it does it
The hard-wearing diamond stylus is drawn across the part with a 
precision motorised traverse mechanism to ensure that the correct 
horizontal distance is travelled. Vertical movement of the stylus is 
detected by a high quality piezo-electric pick-up as it travels across 
peaks and valleys which converts mechanical movement into electrical 
signals. The electrical signal is digitised and sent to a microprocessor 
for instant calculation of surface parameters using standardised 
algorithms.
Charging
The mini USB port can be used for charging with the included mains 
charger (or with any standard USB charger).