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Surftest SJ-410

High precision, portable Mitutoyo surface roughness testers with a dedicated control unit equipped with analysis functionality rivalling that of benchtop surface roughness testers, complying with the latest international standards applying to surface roughness measurement. The color-graphic LCD has excellent visibility for displaying calculated results and assessed profiles. This is useful for checking results without printing them out. A backlight improves usability in dimly lit environments. The built-in high quality, high-speed thermal printer provides hardcopy of measurement results when required including BAC and ADC curves in landscape format, just as they appear on the screen. The choice of models provides a measurement range of 25mm or 50mm. Password protection for setups is available for preventing accidental changes to settings. A manual adjustment knob enables fine positioning of a small stylus for positioning, which is useful when testing the inside surface of small holes. The instrument can be used stand-alone or mounted on a user-supplied stand. Many optional accessories are available to extend the application range.

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  • SKU 178-581-02
  • Model SJ-411, SJ-412
  • Measuring range 25 mm (SJ-411), 50 mm (SJ-412)
  • Measuring speed 0.05, 0.1, 0.2, 0.5, 1.0mm/s returning 0.5, 1, 2, 5mm/s
  • Measuring method Skidless / skidded measurement
  • Drive unit 128 x 35.8 x 46.6mm (5.04 x 1.41 x 1.83 inch) (Size), 0.6kg (Mass)
  • Traverse straightness 0.3 µm / 25 mm or 0.5 µm / 50mm
  • Traverse direction Backward
  • Measuring Force 0.75mN or 4mN
  • Resolution 800 µm / 0.0125 µm, 80 µm / 0.00125 µm, 8 µm / 0.000125 µm (up to 2400 µm with optional stylus)
  • Stylus tip radius 60° 2µm or 90° 5 µm
  • External I/O USB I/F, Digimatic output, RS-232C I/F, External SW I/F
  • Power Supply Two-way power supply: battery (recharageable Ni-MH battery) and AC adapter. Charging time: 4 hours. Endurance: 1500 measurements (differs slighty due to conditions/environment)
  • Base size 275 x 198 x 109mm (10.83 x 4.29 x 7.80")
  • Mass 1.7kg (Display unit), 0.4kg (Height adjustment unit), 0.6kg (Drive unit)

There are 4 variations available

Model No. Detector measuring force Measuring range
SJ-411 0.75mN 25mm
SJ-411 4mN 25mm
SJ-412 0.75mN 50mm
SJ-412 4mN 50mm


  • Skidded and skidless measuremetns are both possible with this series. Measures 46 roughness parameters that conform to the latest ISO, DIN ANSI, JIS standards
  • A wide-range, high-resolution detector and efficient drive unit provide superior high-accuracy measurement
  • A skidless detector and a curved surface compensation function provide efficient evaluation of cylinder surface roughness
  • Ultra-fine steps, straightness and waviness can be measured by using the skidless measurement function
  • The handheld data processing unit and the 5.7-inch colour graphic LCD  touch-panel provides superior readability and operability. The LCD also includes a backlight for improved visbility in dark environments
  • The excellent user interface provides intuitive and easy-to-understand operability
  • Measured data can be output to a PC with an optional RS-232D or USB cable
  • Digital filter function for accurate roughness profiles
  • GO/NG judgement function
  • Auto-calibration function
  • The display interface supports 16 languages, which can be freely switched
  • Simplified contour analysis function supports four types of measurement: step, level change, area and coordinate difference
  • Access to each feature can be password protected, which prevents unintended operations and enables established settings to be protected
  • The optional attachments for mounting on a column stand significantly increase the operability.



Ra, Rq, Rz, Ry, Rp, Rv, Rt, R3z, Rsk, Rku, Rc, RPc, RSm, Rmax, Rz1max, S, HSC, RzJIS, Rppi, Rq, RIr, Rmr, Rmr(c), RoX, Rk, Rpk, Rvk, Mr1, Mr2, A1, Vo, Aa, Aq, Lo, Rpm, tp, Htp, R, Rx, AR, W, AW, Wx, Wte, Possible customise.


FREE Download of Communication Software

We would like to offer you a free copy of our Surftest SJ-201P, 210, 301, 310, 401, 402, 411, 412, 500, SV-2100 Communication program, which enables easy use of the communication function to save and print measurement results. Download here

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General Orders (Not Purchased Online).

If you have bought a Mitutoyo product where the order is not placed online please refer to the terms and conditions relating specifically to that order. The following terms and conditions only apply to online orders of small tools.

Delivery (Online Orders)

Standard (Next Working Day before 5pm) delivery is FREE on all orders over £150. Further express delivery options are available to suit the urgency of your requirements. Simply select the delivery service in the shopping basket. To qualify orders must be placed before 2pm. For the Highlands and Northern Ireland please call us to check

  • Next Working Day: £5.00
  • Next Working Day Before 12.00pm: £15.00
  • Next Working Day Before 10.30am: £19.00
  • Next Working Day Before 9.00am: £25.00
  • Saturday morning: £26.00

(All prices stated above exclude VAT)


Backorders (Online Orders)

Distributors may place backorders for products. Delivery times are subject to change without notice and should be treated as a guide only. If you have any questions regarding products that are not 'in stock' please call our Sales Team on 01264 353123 for more information and advice.

Returns (Online Orders)

In accordance with Mitutoyo customer support services and The Consumer Contracts Regulations 2013 No. 3134, if you should not be satisfied with your purchase within 14 days of receipt, you can return the item for an exchange or refund. The item returned should be in an unmarked ‘as new’ condition, including that of the original ‘product’ presentation/storage packaging or the item will be deemed as being of diminished value and this will be reflected in the. Please ensure that the return carriage packaging provides adequate protection of the item whilst in transit as any damage caused may prevent a refund.

Online returns are only accepted for items purchased directly from If you have purchased a Mitutoyo product from one of our Distributors, please contact them directly to arrange an exchange or refund.

Refunds for returns will include the ‘Standard Next Working Day’ delivery cost if this was incurred upon supply but will not include additional costs for express delivery options.

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