SKU: 50910940447

GOYOJO GSR720 Surface Roughness Tester - 0.001μm

$296.55 $329.50
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Ships within 48 hours · Estimated delivery Aug 9 - Aug 14

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Description

GOYOJO GSR720 Surface Roughness Tester - 0.001μmHow It Works: When measuring surface roughness, the GOYOJO Surface Roughness Tester places the sensor on the surface and then uniformly slides it along the surface using the internal mechanism. The sensor captures surface roughness with its sharp built in probe. This roughness causes displacement in the probe, leading to a change in the induction quantity of the induction coil, thereby generating an analog signal proportional to the surface roughness

How It Works:

When measuring surface roughness, the GOYOJO Surface Roughness Tester places the sensor on the surface and then uniformly slides it along the surface using the internal mechanism. The sensor captures surface roughness with its sharp built-in probe. This roughness causes displacement in the probe, leading to a change in the induction quantity of the induction coil, thereby generating an analog signal proportional to the surface roughness at the output of the phase-sensitive rectifier.

Specifications:

Display Resolution 0.001μm
Measurement Range: Ra 0.025-12.5μm
Ra, Rq 0.005-16μm
Rz, Ry, Rt, Rp, Rv, Rmax, R3z 0.02-160μm
RS, RSm 1mm
Rr 0-100% (9%Rt)
Rsk 0-100%
Range Options ±20μm, ±40μm, ±80μm
Filters RC, PC-RC, GAUSS, D-P
Sampling Lengths 0.25mm, 0.8mm, 2.5mm
Maximum Drive Travel 17.5mm (0.7 inches)
Minimum Drive Travel 1.3mm (0.052 inches)
Indication Error ≤10%
Variability in Indication ≤6%

Specifications:

Display 128X640 LED Dot Matrix (Self-illuminating)
External Interface USB
Power Source Built-in rechargeable lithium-ion battery or external power adapter
Dimensions 140 x 52 x 48(5.51 x 2.05 x 1.89 inches)
Weight 440g(0.97 pounds)

Sensor Performance Specifications:

Detection Principle Inductive
Probe Contact Force 4mN (0.4gf)
Probe Angle 90°
Probe Tip Radius 5μm
Guide Longitudinal Radius 45mm
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 50910940447

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Jay Zuhosky
Draper, US
★★★★★ 4
Thin
Fit Type: Classic Fit, Color: Gray Assorted, Size: Medium
I bought these thinking they would be slightly thicker material. They are thin but don't make my feet sweat working outside in the heat while wearing them during my work shift. They are comfortable and stay in place so I don't have to keep fishing for them inside my shoe to move them up a bit. The one thing I wish they had was the support band in the middle of the foot.
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Reviewed in the United States on June 22, 2023
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Verified Purchase
dave
Phoenix, US
★★★★★ 5
Super comfortable
Fit Type: Classic Fit, Color: Black, Size: Large
Love these socks. They are very soft fabric but also heavy so they are very durable. And the price is far cheaper than any of my local stores.
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Reviewed in the United States on March 26, 2025
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Janna Leek
Lowell, US
★★★★★ 5
Great product
Fit Type: Classic Fit, Color: Black, Size: Large
These are my favorite socks I’ve ever purchased for no-show socks
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Reviewed in the United States on October 9, 2025
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Glen Wright
Chelsea, US
★★★★★ 5
Price
Fit Type: Classic Fit, Color: White, Size: Large
Good price
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Reviewed in the United States on February 4, 2026
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Verified Purchase
peter
Battle Creek, US
★★★★★ 5
Great socks
Fit Type: Classic Fit, Color: Black, Size: Large
Love these socks, very comfortable and look and feel good quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 29, 2025

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