how deep groove can be measured ?

Hello dear buyer: Japan Mitutoyo 178-394, the deepest groove can measure 10mm, but 9mm is safer~ Thank you

Can I use on the 402?

This probe cannot be used on the 402 and the probe for the 402 is no longer available.

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Mitutoyo 178-390 Standard Detector for Surftest SJ-210 & SJ-301, 6.75" Inside Depth, Diamond Stylus, Low-Force Precision Surface Roughness Measurement | For Surftest SJ-210, For Surftest SJ-301

Product ID: 15945792

Details

Batteries Required?
No
Brand
Mitutoyo
Color
silver
Material
Plastic
Power Source
Corded

💎Diamond-tipped stylus for ultra-precise readings

📏6.75" adjustable inside depth for versatile measurement

⚖️Low-force measurement protects delicate surfaces

372248CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💎 Measure with confidence, lead with precision.

ROBUST INDUSTRIAL GRADE - IP54-rated durability built for demanding shop-floor environments and rigorous statistical analysis workflows.
VERSATILE COMPATIBILITY - Seamlessly integrates with Mitutoyo Surftest SJ-210 & SJ-301 models, perfect for machining and quality control pros.
PRECISION DIAMOND STYLUS - Experience unmatched accuracy with a controlled-radius diamond tip that guarantees repeatable surface roughness detection.
TRUSTED INDUSTRY STANDARD - Join thousands of professionals across aerospace, automotive, and medical sectors relying on Mitutoyo’s legacy of precision.
DELICATE SURFACE PROTECTION - Low measuring force (as low as 0.75 mN) ensures your sensitive materials stay pristine during inspection.

The Mitutoyo 178-390 Standard Detector is a precision surface roughness measurement tool designed for Surftest SJ-210 and SJ-301 models. Featuring a diamond-tipped stylus and low-force measurement technology, it delivers highly accurate, repeatable results while protecting delicate surfaces. With a 6.75-inch adjustable inside depth and IP54 durability, it’s engineered for demanding industrial and quality control applications across multiple high-tech sectors.

Specifications

ASIN	B001OBYZ6O
Adjustable Length	Yes
Are Batteries Required	No
Best Sellers Rank	#136,232 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Surface Roughness Gauges
Brand Name	Mitutoyo
Color	silver
Customer Reviews	5.0 5.0 out of 5 stars (8)
Display Type	digital
Extended Length	6.75 Inches
Global Trade Identification Number	04946368041087
Included Components	178-390
International Protection Rating	IP54
Item Weight	0.25 Pounds
Manufacturer	Mitutoyo
Manufacturer Part Number	178-390
Material Type	Plastic
Model Number	178-390
Power Source	Corded Electric
Recommended Uses For Product	machining, shop floor inspection, histogram-based data management, statistical analysis, quality control, surface roughness measurement
UPC	603908263234
Unit Count	1.0 Count

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