Leader Corporation
51644 Filomena Dr., 48315, Shelby Twp, MI, United States
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- A2LA certificate
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What this lab is accredited for
We could not match the method references in this lab’s scope to published test standard numbers. The full scope as published is below.
Only this lab. Searches the method, matrix and range of each of the 5 scope lines.
A2LA certificate 3692.01 · 5 lines
| Line | Method | Matrix | Range |
|---|---|---|---|
| 1 | ISO/IEC 17025:2017; ANSI/NCSL Z540-1-1994 | - | See scope document |
| 2 | Extracted from the scope document; tables may not line up. View scope for the original. (A2LA Cert. No. 3692.01) 11/13/25 Page 2 of 4
Parameter/Equipment
Range
CMC2, 3 (±)
Comments
External Taper Thread
Plug Gages –
Pitch Diameter
Major Diameter
(0.062 to 8) in
Up to 8 in
(140 + 1.0D) µin
(55 + 0.8D) µin
Bench comparator with indicator,
gage blocks, thread wire, sine block
Bench comparator with indicator,
gage blocks, sine block
Internal Straight Thread –
Pitch Diameter
(0.5 to 80 TPI)
Minor Diameter
Up to 16 in
(0.1 to 1) in
(1 to 16) in
(190 + 1.3D) µin
(130 + 4.1D) µin
(85 + 15D) µin
Master plug gage
Gage pins, gage blocks
Internal Taper Thread
Ring Gages –
Pitch Diameter
Minor Diameter
Up to 8 in
(0.05 to 8) in
(100 + 2.9D) µin
(100 + 1.4D) µin
Tapered master gage plug set, height
gage
Tapered master plug
External Taper Plug –
Major Diameter
Step Length
(0.05 to 8) in
(0.05 to 4) in
(120 + 2.3D) µin
(210 + 1.0L) µin
Bench comparator with indicator,
gage blocks, taper sine block
Height gage
Internal Taper Ring –
Minor Diameter
Step Length
(0.05 to 8) in
(0.05 to 4) in
(100 + 0.94D) µin
(210 + 1.0L) µin
Master taper plug
Height gage | ||
| 3 | - | -Show page textExtracted from the scope document; tables may not line up. View scope for the original. (A2LA Cert. No. 3692.01) 11/13/25 Page 3 of 4
Parameter/Equipment
Range
CMC2, 3, 6 (±)
Comments
Cylindrical External Plug
Gages –
Diameter
(0.01 to 16) in
(0.01 to 8) in
(18 + 8.8D) µin
(19 + 2.8D) µin
Bench comparator with indicator,
gage blocks
ULM/UMM
Cylindrical Ring Gages –
Diameter
(0.1 to 8) in
(12 + 4D) µin
Comparison using master rings,
comparison equipment,
ULM/UMM
Dimension Over Roll –
Measure
Up to 8 in
(120 + 0.7L) µin
Roll gage, gage blocks, pins
Spline Gage Plug
(0.05 to 16) in
(0.05 to 9) in
(46 + 3.5D) µin
(52 + 3.5D) µin
Bench comparator with indicator,
gage blocks, gear measuring
wires, ULM/UMM
Spline Gage Ring –
MBW
(0.2 to 16) in
(150 + 11D) µin
Gage blocks, gage measuring
wires
Involute – Measure
Profile
Index
Lead
Runout
(0.2 to 6) in
(0.2 to 6) in
(0.2 to 6) in
(0.2 to 6) in
120 µin
99 µin
97 µin
130 µin
Gear inspection system | 0.01 to 16 in |
| 4 | R205 | - | to 14 in |
| 5 | ISO/IEC 17025:2017; ANSI/NCSL Z540-1-1994 | - | - |
Ranges are reproduced from the accredited scope document as published, and only where we found that range printed in the document for the line. Otherwise the cell reads “See scope document”. An absent range means the register did not state one. Line numbers are ours, for cross-reference; they follow the order of the scope document.
Location
Labs with overlapping accredited scope in United States
- International Certification Measurements, Inc. (subsidiary of Leader Corporation)Shelby Township, MI · under 1 kmA2LAShares 1 accredited test methodANSI/NCSL Z540-1-1994
- Howmet Research CenterWhitehall, MI · ~21 kmA2LAShares 1 accredited test methodANSI/NCSL Z540-1-1994
- MetroCalKentwood, MI · ~99 kmA2LAShares 1 accredited test methodANSI/NCSL Z540-1-1994
- Trescal, Inc - Milwaukee, WIMilwaukee, WI · ~141 kmA2LAShares 1 accredited test methodANSI/NCSL Z540-1-1994
- Quality Calibration ServiceNew Berlin, WI · ~159 kmA2LAShares 1 accredited test methodANSI/NCSL Z540-1-1994
Accreditation data refreshed from the A2LA register on .
This page mirrors a public register. For a purchasing, audit or regulatory decision, confirm against the A2LA entry linked above.