Mitutoyo SJ-412


In stock

Work with this accurate and easy to use portable surface roughness tester with an axis range of 2″ / 50 mm and a measuring force of 4 mN. With numerous innovative features for smooth operations, this tester has a built-in 5.7″ (144.78 mm) backlit LCD providing superior readability that works well for dark environments.

SKU: NSKU1167 Category: Tag:

Mitutoyo SJ-412 Offers

Providing both skidded and skidless measurements, this roughness tester has 46 roughness parameters that conform to ISO, DIN, ANSI, and JIS standards. Work with confidence with its high-resolution detector providing accurate measurements and features a high level of quality control. In addition, this roughness tester works with a digital filter function that delivers non-distorted roughness profiles and a limited contour analysis function that supports; step, level change, area, and coordinate difference measurements.


  • Both skidded and skidless measurement are possible with this series
  • Equipped with 46 roughness parameters that conform to the latest ISO, DIN, ANSI, and JIS standards
  • A wide-range, high-resolution detector and a drive unit provide superior high accuracy measurement in its class
  • Ultra-fine steps, straightness and waviness can be measured by using the skidless measurement function
  • The handheld data processing unit and the 5.7″ (144.78 mm) color graphic LCD touch-panel provides superior readability and operability
  • The LCD includes a backlight for improved visibility in dark environments
  • This excellent user interface provides intuitive and easy-to-understand operability
  • Digital filter function for non-distorted roughness profiles
  • GO/NG judgment function
  • Auto-calibration function
  • The display interface supports 16 languages, which can be freely switched
  • Simplified contour analysis function supports the four types of measurement: step, level change, area and coordinate difference
  • Access to each feature can be password-protected, which prevents unintended operations and allows you to protect your settings
  • Easy and safe measurements that anyone can perform efficiently
  • Higher level of quality control
  • Doing double duty for space saving


Measuring Range X axis: 2″ (50 mm)
Z axis (detector): 800µm, 80µm, 8µm
Detector Detection method: Differential inductance
Resolution (range): 0.01 µm (800 µm) / 0.001 µm (80 µm) / 0.0001 µm (8 µm)
Stylus tip shape (angle/radius): 90°/5 µm
Measuring force: 4 mN
Radius of skid curvature: 1.57″ (40 mm)
Measuring methods: Skidless / skidded (switchable)
Drive Unit (X Axis) Measuring speed: 0.002, 0.004, 0.02, 0.04″ per second (0.05, 0.1, 0.2, 0.5, 1 mm/s)
Drive speed: 0.02, 0.04, 0.08, 0.2″ per second (0.5, 1, 2, 5 mm/s)
Straightness: 0.5µm / 50 mm
Up/Down Inclination Unit Vertical travel: 0.39″ (10 mm)
Inclination adjustment angle: ±1.5°
Applicable Standards JIS 1982/JIS 1994/JIS 2001/ISO 1997/ANSI/VDA
Filter 2CR, PC75, gaussian
Profile: Primary profile, roughness profile, DF profile, waviness profile, roughness motif profile, waviness motif profile
Analysis Graph Material ratio curve, profile height amplitude distribution curve
Data Compensation Functions Parabola, hyperbola, ellipse, circle, tilt, no compensation
Cutoff Value λc: 0.003, 0.01, 0.03, 0.1, 0.3″ (0.08, 0.25, 0.8, 2.5, 8 mm)
λs: 2.5, 8, 25µm
Calculation Display Unit Customization: Selection of display/evaluation roughness parameter
Simplified contour analysis function: Step, step quantity, area, coordinate difference
DAT (digimatic adjustment table) function: Helps to level workpiece prior to skidless measurement
Real sampling function: Inputs the displacement of the detector while stopping the drive unit
Statistical processing: Calculates the maximum value, minimum value, average value, standard deviation, pass rate and histogram for each parameter
Judgment: Maximum value rule, 16% rule, mean value rule, standard deviation (1 σ, 2 σ, 3 σ)
Storing measurement condition: Maximum 10 (calculation display unit)
Print function (built-in thermal printer): Measurement condition/calculation result/Judgment result/calculation result per segment/tolerance value/evaluation curve/graphic curve/ material ratio curve/profile height amplitude distribution curve/environmental setting items/statistical result (Histogram)
Display language: 16 languages (Japanese, English, German, French, Italian, Spanish, Portuguese, Korean, Chinese (simplified/traditional), Czech, Polish, Hungarian,Turkish, Swedish, Dutch)
Storage function: Built-in memory; measurement condition (Up to 10)
External I/O functions: USB I / F, digimatic output, RS-232C I / F, foot switch I / F
Power Supply Built-in battery (rechargeable Ni-MH battery) /AC adapter
Charging time of the built-in battery: about 4 hours (may vary due to ambient temperature)
Endurance: About 1000 measurements (differs slightly due to use conditions /environment)
Maximum power consumption: 50 W
Length Sampling: 0.003, 0.01, 0.03, 0.1, 0.3, 1″ (0.08, 0.25, 0.8, 2.5, 8, 25 mm)
Arbitrary: 0.0039 to 2″ (0.1 to 50 mm)
Dimensions Calculation display unit: 10.83 x 7.8 x 4.29″ (275 x 198 x 109 mm)
Up /down inclination unit: 5.16 x 2.48 x 3.9″ (131 x 63 x 99 mm)
Drive unit: 6.08 x 1.41 x 1.83″ (15.44 x 3.58 x 4.6 mm)
Weight Calculation display unit: 3.7 lbs (1.7 kg)
Up / down inclination unit: 0.88 lbs (0.4 kg)
Drive unit: 1.41 lbs (0.64 kg)



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Mitutoyo SJ-412


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