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.

178-390, Standard Detector for Surftest SJ-201 and SJ-301, 6.75" Inside Depth

Product ID: 15945792

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Details

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

💎Diamond stylus tip for ultra-precise surface detection

📊Seamless integration with Surftest units for advanced data control

⚖️Skid force ≤ 400mN for consistent, reliable measurements

Description

💎 Elevate your surface measurement game with precision that professionals trust!

SHOP FLOOR READY - Robust IP54 rating and compact 6.75" design built for demanding industrial environments.
PRECISION AT ITS CORE - Diamond stylus tip ensures micrometer-level surface roughness accuracy.
EFFORTLESS DATA MASTERY - Connects flawlessly with Surftest SJ-210 & SJ-301 for streamlined QC and statistical processing.
TAILORED FOR EVERY GROOVE - Available in standard and deep groove types with varying head sizes to fit your exact needs.
CONSISTENT FORCE CONSISTENT RESULTS - Built-in skid force capped at 400mN guarantees repeatable, reliable measurements every time.

The Mitutoyo 178-390 is a high-precision detector designed for use with Surftest SJ-210 and SJ-301 surface roughness testers. Featuring a diamond stylus tip and skid measurement technology with forces as low as 0.75mN, it delivers reliable, repeatable surface roughness data. Its IP54 rating and versatile detector types make it ideal for rigorous shop floor, machining, and quality control applications.

Specifications

ASIN	B001OBYZ6O
Adjustable Length	Yes
Batteries Required?	No
Best Sellers Rank	#191,472 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7 in Surface Roughness Gauges
Brand	Mitutoyo
Color	silver
Date First Available	November 9, 2004
Extended Length	6.75 Inches
Global Trade Identification Number	04946368041087
International Protection Rating	IP54
Is Discontinued By Manufacturer	No
Item Weight	4 ounces
Item model number	178-390
Manufacturer	Mitutoyo
Material	Plastic
Power Source	Corded Electric
Product Dimensions	6.6 x 3.7 x 1.3 inches
UPC	603908263234

Reviews

T**E

Works great

We need this device for surface measurement. This is exactly what I was looking for and it works great. Thanks.

24.06.2013

J**S

Works as expected

8.02.2017

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