How To Schedule Calibration, Evaluation or Gage Repair
Step 1: Contact Your Account Manager
- Reach out to your Account Manager to request a proposal for calibration or gage repair services. If you do not know your account manager please email info@johnsongage.com and be connected with your Account Manager.
- When requesting a calibration or evaluation quote, you will be asked to provide the following details:
- List of all items (Frames, Indicators, Elements, Standards)
- Include complete frame models and thread designations when applicable
- Provide your internal Gage ID or reference the Johnson Gage 3-letter code when applicable (Note: The 3-letter code is used on External/Internal Segments and Setting Standards)
- For any questions, your Account Manager is able to assist.
Step 2: Submit Your Purchase Order and Ship the Gages
- Once you have received the quote, create a purchase order. This will streamline the process.
- Email the purchase order to your Account Manager
- Include the Gage inventory list and the Purchase Order with the shipment.
- Ship your items to:
- Ship to: The Johnson Gage Company
534 Cottage Grove Rd.
Bloomfield, CT 06002
Attn: Calibration
- Ship to: The Johnson Gage Company
Step 3: Gage Calibration and Repair
- Upon receipt your items will be inventoried, evaluated and inspected.
- If all items are found within specified tolerances, they will be returned promptly with the appropriate calibration documentation.
- If any component is found outside of the tolerance limits, or items need additional servicing, your Account Manager will contact you to explain your options and if needed provide an updated proposal for your review.
- You can choose to have your gages returned without further work, amend the current purchase order, or issue a new purchase order for the additional amount.
Certificate of Conformance (CoC)
Short Form (SF) Certification is the Certificate of Compliance.
A SF CoC is a statement that the gage complies with the applicable specification.
It is primarily a compliance declaration.
They do not include actual measured values, uncertainty date or inspection characteristics.
These typical Thread Gages are supplied with Certificate of Conformance:
Thread Work Ring Gages
Thread Work Plug Gages
Gage Element: Segments
Gage Element: Tri-Rolls
Certificate of Calibration
Long Form (LF) Certification is the Certificate of Calibration and provides detailed calibration and measurement information.
A Certificate of Calibration documents:
- actual inspection/calibration results,
- measured values,
- traceability,
- and details of the calibration process.
It is a metrology document rather than simply a compliance statement.
Thread Gages supplied with Certificate of Calibration:
Thread Set Ring Gages
Thread Set Plug Gages
Please contact your account manager if you require as-found information on your documentation.
A2LA Accredited Calibration Certificate
Johnson Gage’s A2LA accredited laboratory provides precision inspection, calibration, and certification services for dimensional and screw thread gaging equipment
Indicators
- Analog indicators
- Digital indicators
- Test indicators
Plain Gages
- Plain ring gages — internal diameter. Class “Y” and “Z”
- Plain plug gages — external diameter. Class “Y” and “Z”
Straight Threaded Ring Gages
- Functional Pitch Diameter
- Simple Pitch Diameter
- Minor Diameter
Straight Threaded Plug Gages
- Major Diameter
- Pitch Diameter
- Thread Lead (Pitch)
- Thread Flank Angle
External & Internal Thread Gaging Roll Contacts
- Major diameter
- Pitch diameter
- Roll profile / flank contact
- Thread Lead (Pitch)
- Thread Flank Angle
External Thread Gaging Segment Contacts
- Pitch Diameter / Minor Diameter relationship
- Thread Lead (Pitch)
- Thread Flank Angle
Internal Thread Gaging Segment Contacts
- Major diameter
- Pitch Diameter
- Segment profile / flank contact
- Thread lead (pitch)
- Thread flank angle
Thread Form Capability
- 4 to 80 threads per inch (TPI)
- 0.3 mm to 8.0 mm pitch
Johnson Gage maintains traceable standards, controlled procedures, trained personnel, and documented quality systems in accordance with ISO/IEC 17025 accreditation requirements to ensure reliable and repeatable measurement results