Division or Address / Doc. No. / Rev. No.
Division or Address / Date: / Page XXX of x
ISO Procedure
Inspection, Measuring, and Test Equipment
Approved: ______
title Name
Approved: ______
title Name
Approved: ______
title Name
Approved: ______
title Name
Approved: ______
title Name
Change Record
Rev / Date / Responsible Person / Description of ChangeA / Name / Initial Release
Distribution List
(list the departments that receive controlled copies)
1. Purpose
• To establish procedures in the calibration and handling of measurement and test equipment used in verifying conformance of products to the established quality requirements and specifications.
• To establish a system by which gages and measuring equipment are controlled, calibrated, and maintained.
• To establish an administrative system that assures conformance of all tooling to specified requirements.
2. Scope
This procedure governs all special tools, gages, instruments, fixtures, and testing devices used for manufacture, assembly, inspection and test, as well as tooling used as a measure of acceptance criteria including:
• mechanical tools and gages used to measure physical dimensional parameters and includes, but is not limited to jigs, fixtures, mechanical hand tools and gages.
• electronic test equipment, which includes but is not limited to instruments for measuring and recording AC or DC voltage, AC or DC current, resistance, inductance, capacity and frequency.
• physical tools and gages used to check physical parameters, such as mass, temperature, pressure, humidity, all special tools, gages, instruments, fixtures, and testing devices used for manufacture, assembly, and inspection and test.
• optical test equipment used to measure optical parameters and includes, but is not limited to jigs, fixtures, optical gages, and optical test stations.
3. Responsibilities
All employees using measuring and test equipment are responsible for seeing that an item of equipment is not used when its calibration period has expired and to return such items for calibration.
The calibration laboratory notifies <COMPANY> of any measuring test equipment found to be out-of-tolerance (as stated by the manufacturer) and provides a copy of the calibration data highlighting the out-of-tolerance measurements.
<Job title> maintains records for each item scheduled for calibration and repairs out-of-tolerance equipment.
<Job title> is responsible for the coordination of retrieving and assigning of equipment being serviced by a contracted calibration lab.
<Job title> audits and reviews the calibration procedures being performed and keeps the calibration records on file.
<Job title> approves all repairs to equipment by contractors outside of <COMPANY> prior to issuing any purchase order.
<Job title> investigates high frequency of out-of-tolerance equipment.
4. Procedure
4.1 General
Measurement and test equipment are calibrated by a commercial laboratory. The laboratory must:
• <item>
• <item.
• <item>
<Job title> certifies the laboratory.
<Job title> performs in-house calibrations. Personnel calibrating equipment are qualified. Records of qualifications are maintained in <location>.
<Job title> prepares the calibration procedures for in-house calibration. Calibration procedures are maintained by Document Control.
4.2 Records
The calibration record includes:
• <item>
• <item>
• <item>
<Job title> stores the <name of records> in <location> for <length of time>.
4.3 Standards
Measurement standards are accurate relative to the intended use on the equipment. The collective uncertainty of the standard does not exceed <n%> of the acceptable tolerance for each characteristic being calibrated.
If not traceable to National Institute of Science and Technology standards or if no standard exists, the calibration laboratory is required to develop criteria.
Calibrated items must pass an acceptance criteria ratio of <ratio>.
4.4 Identification
<Job title> maintains a master list of all equipment in the calibration system. The <name of master list> includes <items>.
<Job title> stores the <name of master list> in <location> for <length of time>.
A non-removal calibration label is affixed to all equipment in the calibration system. The label indicates <items>.
If it is impractical to apply the label to the item, it is attached <location>.
For special applications, labels note ranges that may be out-of-tolerance. <Name of record> indicates special applications.
4.5. Environment
Equipment is calibrated in the same environment in which it is used. For in-house calibrations temperature and humidity are monitored <activity>.
When calibration results are obtained in an environment that departs from standard conditions, compensating corrections are made.
<Job title> records temperature and humidity readings and stores the readings <location>.
4.6 Schedule
Items are scheduled for calibration based on <activity>.
The minimum interval between calibrations is <interval>. New equipment is inspected and calibrated prior to use.
Intervals are adjusted when necessary based on <activity>. The interval is extended when <criteria>. The interval is shortened when <criteria>.
4.7 Adequacy
<Job title> reviews test equipment and measurement standards <frequency> to assess the calibration system. The following is determined during the review:
• <item>
• <item>
<Job title> compares calibration results to previous calibrations to evaluate the stability of the standard.
For in-house calibrations, items found to be out-of-tolerance are <activity>. <Job title> repairs the item.
Prior inspection records are reviewed to determine the validity of the previous inspection.
Failures are reported to <job title> who determines whether to reinspect all product calibrated with the faulty test equipment or measuring device.
5. Related Documentation
<Calibration Logbook>
<Calibration Record>
<Audit of External Calibration Facility>
Document and Data Control
Process Control
Inspection and Testing
Inspection and Test Status
Quality Records
<list work instructions>
Controlled Copy, Do Not Duplicate For Internal Use Only