Inspection Capabilities
What We Measure
on Every Part
From basic linear dimensions to full GD&T verification, surface roughness to salt spray corrosion — our inspection lab is equipped to verify every callout on your drawing, with traceable accuracy down to 0.002 mm.
±0.002 mm CMM Accuracy
14 GD&T Symbols
Ra 0.025 μm Roughness
ISO 17025 Traceable
CMM Accuracy
±0.002 mm
GD&T Symbols
All 14 Verified
Linear, Angular & Positional Measurement
Linear Measurement
1
Linear Dimensions
Length, width, height, hole diameter, hole position, step height — measured by CMM, vision systems, micrometers, and calipers depending on tolerance and feature type.
Angular Measurement
2
Angular Dimensions
Chamfers, tapers, included angles, intersection angles between datums — verified with CMM rotary measurement, angle blocks, and digital protractors.
True Position
3
Position & Spacing
Hole-to-hole spacing, edge-to-feature offsets, datum-referenced positions, and bolt-circle accuracy. CMM-verified with PC-DMIS software.
Inside Our Inspection Lab
Measurement in Action
From CMM verification to optical projection — a look at how every part is inspected on our QC floor.
01 · CMM Lab
3D Coordinate Measuring
02 · Vision
2D Optical Projector
03 · Ra
Surface Roughness
04 · Optical
Microscope Inspection
05 · Coating
Thickness & Adhesion
All 14 Geometric Tolerances Verified
CMM Verified
All 14 Symbols
Standard
ASME Y14.5 · ISO 1101
If it's a callout on your drawing, we verify it. Our CMM and vision systems are programmed to read complete GD&T feature control frames — datum references, material condition modifiers, projected tolerance zones, and composite tolerances.
Reports are generated in either ASME Y14.5 or ISO 1101 format, whichever your QC team prefers. PDF and Excel formats supported, AS9102-compatible FAI on request.
Every datum (A, B, C) and feature is mapped back to your original drawing — making cross-reference review fast for your QA team.
Symbol
GD&T Tolerance
Type
Min Tolerance
⏤
Straightness
Form · No datum required
0.005 mm
⏥
Flatness
Form · No datum required
0.005 mm
○
Circularity / Roundness
Form · No datum required
0.001 mm
⌭
Cylindricity
Form · No datum required
0.002 mm
⌒
Profile of a Line
Profile · Datum optional
0.01 mm
⌓
Profile of a Surface
Profile · Datum optional
0.01 mm
⫽
Parallelism
Orientation · Datum required
0.005 mm
⟂
Perpendicularity
Orientation · Datum required
0.005 mm
∠
Angularity
Orientation · Datum required
0.005 mm
⌖
True Position
Location · Datum required
0.01 mm
◎
Concentricity
Location · Datum required
0.005 mm
⌯
Symmetry
Location · Datum required
0.01 mm
↗
Circular Runout
Runout · Datum required
0.005 mm
⌰
Total Runout
Runout · Datum required
0.005 mm
Surface Roughness & Quality Verification
Ra Profilometry
Surface Roughness
Contact Stylus Profilometry
Ra — Arithmetic Average
Average deviation of profile · Most common spec
0.025 – 12.5 μm
Rz — Mean Peak-to-Valley
Average peak-to-valley over 5 sampling lengths
0.1 – 50 μm
Rq — Root Mean Square
RMS deviation · Optical/electronic applications
0.025 – 12.5 μm
Rt — Total Profile Height
Maximum peak-to-valley over full evaluation length
0.5 – 100 μm
Standards
ISO 4287, ISO 4288, ASME B46.1
Compliant
Visual QC
Visual Surface Quality
Defect Detection & Cosmetic Inspection
Scratch & Dig (Per MIL-PRF-13830B)
Surface defect grading for optical & precision parts
Grade 40/20
Burr & Edge Condition
Deburred / chamfered / break edge specifications
Per Spec
Tool Marks & Machining Lines
Visual inspection vs reference standard sample
Limit Sample
Discoloration & Staining
Heat marks, coolant residue, oxidation traces
Per AQL
Cosmetic Class Grades
A / B / C classification per drawing zones
Custom
Bore, Thread & Internal Feature Inspection
Bore & Depth
Bore & Hole Inspection
Internal Diameter & Depth Verification
Inner Diameter (ID)
Three-point bore micrometer · 3-prong contact
Ø1 – 300 mm
Bore Depth
Digital depth gauge · Blind hole verification
0 – 300 mm
Counterbore Diameter & Depth
CMM probe sweep · Step depth verification
±0.005 mm
Cross-Hole Position
CMM datum-referenced position · True position
±0.01 mm
Bore Concentricity to OD
Coaxiality on turned shafts & bushings
±0.005 mm
Thread Gauging
Thread Inspection
Go / No-Go Gauge & Profile Verification
Metric Threads (M / MJ)
M1 to M64 · 6g / 6H tolerance class · ISO 1502
Go / NoGo
UNC / UNF / UN Threads
Unified inch threads · 2A / 2B / 3A / 3B fit
Go / NoGo
Pipe Threads (NPT / BSPT)
Tapered pipe threads · Pressure tested
L1 Gauge
Thread Profile (Optical)
Pitch, flank angle, major/minor dia · Microscope
±0.005 mm
Thread Depth in Blind Holes
Effective thread depth verification
±0.5 pitch
Material, Hardness & Heat Treatment Checks
Hardness Test · HRC / HV
Mill Cert · Heat №
Heat Treatment
HRC
Rockwell Hardness Test
HRC 20 – 70 range · 150 kgf load · Tool steel, hardened parts, bearings
HV
Vickers Hardness Test
HV 50 – 1500 range · Micro indentation · Surface-hardened layers
HB
Brinell Hardness Test
HB 100 – 650 range · For softer materials & castings
CERT
Mill Certificate Validation
Heat number traceability · Chemical composition · Mechanical properties verification
HT
Heat Treatment Verification
Case depth · Effective depth · Core hardness · Microstructure check
PMI
Positive Material Identification
XRF alloy verification on request · Aerospace & medical orders
Coating & Treatment Inspection
Test 01 · Corrosion Resistance
Salt Spray Test
Accelerated corrosion testing for plated, anodized, and painted surfaces. Verifies coating performance under harsh environmental simulation.
StandardASTM B117 / ISO 9227
Test ModesNSS · CASS · AASS
Duration48 – 1000 hours
Test 02 · Coating Thickness
Coating Thickness Gauge
Non-destructive measurement of anodize, plating, and powder-coat thickness using eddy current and magnetic induction principles.
Anodize Type II5 – 25 μm
Anodize Type III25 – 75 μm
Accuracy±1 μm
Test 03 · Coating Adhesion
Cross-Hatch & Tape Test
Adhesion verification for paint, powder coat, and electroplated finishes. Critical for cosmetic and functional coatings that must resist peeling.
StandardASTM D3359
MethodCross-cut / Tape pull
Grade5B (best) – 0B
Specialized Inspection Methods
Roundness Lab
SPEC 01
0.1μm
Roundness Tester
Ultra-precision roundness and cylindricity measurement on turned shafts, bushings, and bearing rings. Polar plot output with harmonic analysis for spindle, gear, and bearing applications where out-of-roundness is critical.
Microscopy
SPEC 02
1000×
Optical Microscope
High-magnification optical microscope for surface defect inspection, edge condition assessment, microstructure observation, and small-feature visual verification.
SPEC 03
5μm
Concentricity
Coaxiality between bores and outer diameters on turned components. Critical for shaft assemblies.
Vision Systems
SPEC 04
2D / 2.5D / 3D
Multi-Mode Vision Measurement
2D optical for flat profiles · 2.5D hybrid with Z-probe for step heights · 3D CMM for complete GD&T verification — selected per measurement task.
SPEC 05
±0.001mm
Digital Caliper / Micrometer
Daily-calibrated digital instruments for outside, inside, depth measurement. ID three-point bore micrometers. 200+ items inventoried per shift.
SPEC 06
5year
Records Retention
All inspection records and dimensional reports archived for 5 years — supporting traceability requirements for aerospace, medical, and defense supply chains.
±0.002mm
CMM Best Accuracy
14
GD&T Symbols
100%
CMM on Critical
ISO
17025
17025
Traceable Calibration
Master Capability Matrix
Complete Inspection Capability Summary
Every measurement we can perform, the equipment we use to perform it, and the accuracy we can achieve — at a glance.
| Feature / Parameter | Range | Accuracy | Equipment / Method |
|---|---|---|---|
| Linear Dimension | 0 – 3000 mm | ±0.002 mm | CMM · Micrometer · Caliper |
| Hole Position (True Pos) | Datum referenced | ±0.01 mm | 3D CMM · PC-DMIS |
| Inner Diameter | Ø1 – 300 mm | ±0.005 mm | 3-Point Bore Micrometer · CMM |
| Bore Depth | 0 – 300 mm | ±0.005 mm | Digital Depth Gauge |
| Counterbore | Ø & depth | ±0.005 mm | CMM Probe Sweep |
| Angular Dimension | 0° – 360° | ±0.005° | CMM Rotary · Angle Block |
| Surface Roughness (Ra) | 0.025 – 12.5 μm | ±5 % | Mitutoyo SJ-410 |
| Roundness | Ø2 – 300 mm | 0.1 μm | Roundness Tester |
| Cylindricity | L up to 600 mm | 0.2 μm | Roundness Tester |
| Flatness / Parallelism | Any surface | 0.005 mm | 3D CMM · Granite Plate |
| Concentricity | Coaxial features | 0.005 mm | CMM · Dial Indicator |
| Hardness (HRC) | HRC 20 – 70 | ±0.5 HRC | Rockwell Hardness Tester |
| Hardness (HV) | HV 50 – 1500 | ±1 % | Vickers Micro Hardness |
| Thread (Go/NoGo) | M1 – M64 · UNC/UNF | Per ISO 1502 | Thread Gauge Set |
| Thread Profile | Optical projection | ±0.005 mm | Microscope · 2D Vision |
| Salt Spray | 48 – 1000 hrs | Per ASTM B117 | Salt Spray Chamber |
| Coating Thickness | 0 – 1000 μm | ±1 μm | Eddy Current Gauge |
| Visual Defects | 10× – 1000× | Per Sample | Optical Microscope |
DIMENSIONAL REPORT
Part Number
HX-AERO-2487-A
Material / Heat №
Al 7075-T6 / H-83712
| Feature | Nominal | Actual | Status |
|---|---|---|---|
| L1 Overall Length | 120.000 ±0.05 | 119.987 | PASS |
| Ø1 Bore Dia | Ø 25.000 H7 | Ø 25.012 | PASS |
| ⌖ Position A-B-C | ⌀ 0.025 | ⌀ 0.018 | PASS |
| ⏥ Flatness Datum A | 0.010 | 0.005 | PASS |
| Ra Surface Finish | 1.6 μm | 1.2 μm | PASS |
Inspected · J. Wang
2026-03-15 · CMM-04
Sample Report
What You Get With Every Shipment
Every order ships with a complete dimensional inspection report — the same level of detail aerospace and medical OEMs receive. No selective sampling, no extra charges, no follow-up emails required.
Reports are generated directly from our CMM PC-DMIS software with full GD&T callouts mapped to your drawing. PDF and Excel formats are standard; AS9102-compatible FAI format is available on request.
✓
Every critical dimension measured (no sampling)
✓
Heat number & mill cert linked to lot
✓
GD&T callouts verified per ASME Y14.5 or ISO 1101
✓
Inspector signature & equipment serial number
✓
5-year archival retention for traceability
Get a Quote
Send Your Drawing.
Get a Quote.
Every enquiry includes a DFM review — tolerance feasibility, material confirmation, and process approach confirmed before production starts. MOQ 1 piece.
24hr
Quote Response
MOQ 1
Prototypes OK
ISO
9001:2015
📐
DFM Review on Every Enquiry
Tolerance feasibility, fixturing strategy, and material confirmation. Specific, actionable feedback — not generic pushback.
🎯
First Article Inspection — Standard
FAI report on every new run. Material certs and surface treatment certs included with every shipment.
🔄
Same Process: Prototype to Production
Process plan from your prototype applies to production batches. No re-qualification when you scale.
⚙
3 / 4 / 5-Axis CNC + Turning
Complex structural parts, shafts, housings, and transmission components. Metals and engineering plastics.
ISO 9001:2015
3/4/5-Axis Milling
CNC Turning
CMM Inspection
Global Delivery