Liport-PMA

21/05/2026

Hey guys, thread plug gauges here～
M0.8 to M90, Metric 6H, coarse & fine threads all covered.
M5, M10, M20 in 6H – full specs available ✅
Other sizes and tolerances? Can do custom too.
Hit me up if you need anything 💬

29/04/2026

The advantage of the steel needle gauge is obvious, whether in terms of the service life environment and the stability of the accuracy, so what material will you choose? measurement

18/04/2026

We manufacture custom GO/NO-GO gauges to your exact specifications, including:
• Custom diameter sizes (metric/inch)
• Specialized marking and part numbers
• Color-coded handles for quick identification
• Different tip materials (ceramic, steel, carbide)
No minimum order quantity for most standard sizes. Message us your drawing today for a free quote – we ship worldwide!

13/04/2026

Product Overview ·Application Scenarios

This professional high-speed steel (HSS) gauge block set (slip gauge/block gauge) is a high-precision length standard measuring tool, available in both metric and imperial specifications, designed for calibrating calipers, micrometers, dial indicators and other precision instruments, as well as verifying machine tool accuracy, fixture precision and dimensional inspection in industrial production. Made of premium HSS with mirror lapping and heat treatment, each block features exceptional hardness, wear resistance and long-term dimensional stability. We offer complete sets from 6Pcs to 122Pcs with Grade 0/1 accuracy options, fully meeting global industrial measurement needs. It is an essential tool for machining, mold making, metrology calibration, automotive, aerospace and quality control, and supports custom non-standard sizes and dedicated sets for calipers/micrometers.

Product Features & Specifications

1.Premium HSS Material: High-quality high-speed steel (HSS), quenched heat treatment, hardness 62–66HRC, excellent wear resistance and long service life.
2.Mirror Lapped Surface: Fine lapped finish, ultra-smooth, high flatness, stable dimensional accuracy, no burrs.
3.Anti-Rust & Protection: Each block wrapped with anti-rust oil paper, effectively preventing corrosion and maintaining surface finish.
4.Sturdy Wooden Case: Dedicated slot for each block in a solid wooden box, shockproof, dustproof, easy storage and transport.
5.Clear Laser Marking: Exact size (metric mm / imperial inch) engraved on each block, easy identification and use.

04/04/2026

Custom Plain Ring Gauge –Made to Your Specs

Customization Service
If the specification you need is not listed in the product list, please feel free to contact us, and we will provide customized solutions for you.
✅ Customization Range
Size Range: Inner diameter (outer diameter with precision is also available) from 1.000mm to 500.000mm, including micron-level sizes (e.g. 4.862mm ±0.001mm)
Material Options:
Industrial Ceramic (maximum accuracy up to ±0.5μm)
GCr15 Bearing Steel
Cemented Carbide (Tungsten Steel)
Measurement System: Metric / Inch
⏱️ Lead Time
Standard Customization: 5-7 working days

04/04/2026

This professional smooth/plain ring gauge is a high-precision tool for shaft diameter, inner bore inspection, Go/No-Go pass/fail testing, and instrument calibration. Made of premium GCr15 bearing steel with full grinding & quenching treatment, it features excellent hardness, wear resistance and ±0.001mm/0.002mm accuracy, ideal for machining, mold making and metrology. Custom non-standard sizes available.

Size Difference Note📌
When you order a nominal size (e.g. 50mm) plain ring gauge, the actual finished size of the product will be within the allowable tolerance range as shown in the parameter table.
Taking 50mm as an example, the delivered size may be 49.998mm, 49.999mm, 50.000mm, 50.001mm, or 50.002mm, all of which meet the factory's quality standards and national metrology requirements.

Product Features & Specifications

Material: GCr15 high carbon chrome bearing steel, quenched and heat treated, hardness 58-65HRC
Accuracy: The accuracy varies according to the size specification, with the maximum accuracy up to ±1μm (±0.001mm), in line with industrial metrology standards
Size range: 1mm-500mm, support custom non-standard sizes
Surface: Full ground and polished, high finish, no burrs, no damage to workpiece
Marking: Clear laser engraving with diameter size, batch and standard mark
Structure: Knurled outer circle for anti-slip, rounded edges for safe operation
Application: Calibration of measuring tools, shaft diameter inspection, mold and machinery parts detection
Packaging: Each piece packed in independent ABS plastic box for anti-rust and anti-collision

Custom Plain Ring Gauge –Made to Your Specs

Customization Service
If the specification you need is not listed in the product list, please feel free to contact us, and we will provide customized solutions for you.
✅ Customization Range
Size Range: Inner diameter (outer diameter with precision is also available) from 1.000mm to 500.000mm, including micron-level sizes (e.g. 4.862mm ±0.001mm)
Material Options:
Industrial Ceramic (maximum accuracy up to ±0.5μm)
GCr15 Bearing Steel
Cemented Carbide (Tungsten Steel)
Measurement System: Metric / Inch
⏱️ Lead Time
Standard Customization: 5-7 working days

13/03/2026

06/03/2026

Precision Ceramic Gauges | Factory Direct & Custom Solutions
Professional measuring tools for industry, quality control, and calibration.

We supply:
✅ Ceramic Gauge Blocks
✅ Pin Gauges
✅ Ring Gauges
✅ Plug Gauges
✅ Custom sizes & non-standard orders

Key advantages:
• High hardness & wear-resistant
• Anti-rust, anti-corrosion, non-magnetic
• High precision ±0.001mm
• Stable performance & long service life
• Factory direct, competitive price
• Fast production & reliable delivery

OEM & ODM welcome. For quotation and customization, send us your drawing or specification.

04/03/2026

The tolerance is always controllable.

28/02/2026

High-Precision Thread Gages: Your Reliable Partner for Quality Control
Tired of unstable thread quality, long lead times for custom orders, or struggling to find the exact thread size you need?
We are a professional manufacturer of high-precision thread gages, committed to providing reliable quality control solutions for global industries.
✨ Our Core Strengths
Full Range of Thread Types
We cover all major standards:
Metric threads: M, MJ series
Unified threads: UNC, UNF, UNEF, UNS, NPT, NPTF
British threads: BSW, BSF, BSP, BSPT, R, G
Pipe threads: G, R, NPT, NPTF, BSPP, BSPT
Trapezoidal threads: Tr series
Taper threads: Custom taper gages for special applications
Professional Customization & Fast Lead Times
We provide tailored solutions for your unique requirements with short lead times to keep your production on track.
Our engineering team works closely with you to ensure the gages fully meet your project specifications.
Complete Sizes & Full Precision Range
We support strict tolerance requirements:
Internal thread precision: 6H, 7H, 2B, 3B, etc.
External thread precision: 6g, 6e, 2A, 3A, etc.
Special tolerance grades are also available upon request.
Left-Hand & Right-Hand Thread Plug & Ring Gages
We produce both LH (left-hand) and RH (right-hand) thread plug gages and ring gages for perfect matching with your components.
🛠️ Why Choose Us?
Quality Assurance: Manufactured in accordance with ISO, DIN, ANSI, BS and other international standards, and fully inspected in our precision laboratory.
Fast Delivery: In-stock items ship quickly; custom orders receive priority processing to minimize lead times.
Professional Support: Our technical team is ready to assist with selection, application, and troubleshooting.
📞 Contact Us
If you’re looking for a reliable thread gauge supplier, feel free to reach out!
Email: [[email protected]]
Tel / WhatsApp: +86 151 7889 4053
Website: https://liport-gage.com
Tag a colleague in quality control or production to share this solution! 👇

27/02/2026

Gogogo 😀😀