NIST Traceable Tape Measures & Tape Measure Calibration Tools

  • Certificate of Traceablity to NIST included with all tools.
  • Each tool is individually inspected, has serial number and certificate

  • Implement as part of your ISO 9001 certification program
  • Tape measure calibration log included with each order

Calibrated Tape Measures
Both Standard and Metric 
Complete range of sizes
NIST Traceable

Stanley 25' 33-425       Milwaukee 48-22-5233 Metric Tape Measure

                                                                      Standard                        Metric
                                                                 Tape Measures           Tape Measures

Tape Measure Calibration Tools
Calibrate both the push and pull measurements of most tape measures
Designed to straighten most tape measure end hooks
Quick and easy verification of accuracy

Lixer A-Class Tape Measure Calibration Tool    Lixer SG Tape Measure Calibration Tool

                                                      Lixer A-Class                                                  SG Lixer

Multi-Instrument Calibration Tools 
Gage Blocks are used to calibrate tape measures, calipers, and micrometers
Super Lixers can be used to calibrate tape measures and levels

Lixer Gage Block Tape Measure Calibration Tool            Lixer Master Gage Block Multi-Tool Calibration Set       Super Lixer Tape Measure & Level Calibration Tool

                     Lixer Gage Block                          Lixer Master                                      Super Lixer
                                                                                Gage Block Set

Tape Measure Inspection Tools
Lixer Squares can be used to verify 90° and 45° angles and tape measures
Lixer Pass/Fail Inspection Tools verify tape measure accuracy
RP Lixer verifies tape measure accuracy

Pass/Fail Lixer Tape Measure Inspection Tool    Lixer Square with Tape Measure Inspection   Lixer RP Tape Measure Inspection Tool

                             Pass/Fail Lixer                                Lixer Square                                    RP Lixer



Featured Products:

(Click on the Product tab above for additional product options)


The "Lixer" provides a NIST traceable standard to calibrate or verify the accuracy of tape measures. The NIST Certificate, which is included, indicates +/- errors within .002 inches on the SG Lixer, the Super Lixer, the Pass/Fail Lixer and the RP Lixer.

The Lixer Tape Measure Calibration Tool has calibration lines for both standard and metric. Calibration lines are lasered on the SG Lixer, the Super Lixer, the Pass/Fail Lixer and the RP Lixer at 10 cm and 6 inches.

The Lixer A-Class is an aluminum version of the Lixer Tape Measure Calibration Tool. It has edges milled in the scale bed which provide the reference point for the 10 cm or 6 inch marks of the tape measure. The NIST Certificate for the Lixer A-Class indicates +/- errors within .0005 inches.

The Lixer Gage Block is a stainless steel version of the Lixer Tape Measure Calibration Tool. It has the same features for tape measures calibration as the A-Class, but with additional information listed on the NIST Certificate for verifying accuracy of calipers and micrometers. The Lixer Gage Block Certificate indicates +/- errors within .0005 inches for tape measures and actual numbers (ROV) for caliper and micrometer verification surfaces.

A Lixer is . . .

A Lixer is the only tool designed to check the accuracy of new and used tape measures and straighten bent end hooks. It will check the accuracy of both the push and the pull functions of the tape measure. It will work with most tape measures, both English or Metric. Some tape measures have lost accuracy due to bent end hooks, commonly caused by accidentally being dropped. The end slot of the Lixer is designed to straighten these damaged end hooks.

Lixer Tools offers several of our tape measure calibration and inspection tools made from wood. The benefit of the wooden tools is that wood has a low coefficient of linear thermal expansion parallel to grain.

This is an important tool for all trades that require accuracy in measuring with a tape measure. This is especially important if several tape measures are being used by different craftsmen or at different locations. This will also benefit subcontractors collaborating on the same project. All the tape measures in such an operation need to measure the same. This would certainly be the objective of ISO certification.

Likewise, we found that by calibrating all the tape measures and equipment to one source (NIST), we could keep the shop running more accurately, and help avoid costly measuring errors.

In the process of running our custom cabinet business, we discovered that even new tape measures are not always accurate. Sometimes this is due to a burr left on the inside of the tape measure hook during the manufacturing process. We have also noticed a slightly random placement of the end hook. Some manufactures tend to place the end hook more accurately. For these reasons we suggest using a Lixer when purchasing a tape measure, and would suggest a quality manufacturer as well.

Using a Lixer for ISO applications. . .

ISO 9001:2008 7.6 Control of Monitoring and Measuring Equipment says:

Where necessary to ensure valid results, measuring equipment shall:

  1. be calibrated or verified, or both, at specified intervals, or prior to use, against measurement standards traceable to international or national measurement standards; where no such standards exist, the basis used for calibration or verification shall be recorded (see 4.2.4);
  2. be adjusted or re-adjusted as necessary;
  3. have identification in order to determine its calibration status;

Pages 4-5 at

A Lixer will help meet these ISO requirements by:

  1. The Lixer with NIST certification gives you traceability to national standards to verify the accuracy of both the push and pull measurements of your tape measure.
  2. The Lixer allows you calibrate the accuracy of the tape measure by adjusting the end hook, or helping identify other issues associated with the end hook such as a burr or other manufacturing defect which may be able to be corrected. The Lixer Tape Measure Calibration Tool is traceable to NIST (National Institute of Standards and Technology).  The Lixer allows for easy verification and adjustment of your tape measures accuracy whenever necessary. (see Recommendations)
  3. When a Lixer is purchased with a Certificate of NIST Traceability, it has a serial number by which to identify it. Annual recertification is recommended for ISO compliance.  We also keep a record of these NIST Certificates on file.


Recommended by:

Key Management Consulting (ISO 9001 & API Q1 certification)

"I am a consultant helping companies with ISO 9001 and API Q1 certification and I have recommended your product to multiple clients, who have all purchased from you...  The product works great for their applications and is easy to use.  Keep up the good work!"

 Billy Matthews,  Consultant,  Key Management Consulting

Protool Reviews

"Using the Lixer was very simple and we verified that our Starrett tape was accurate on only one side of the tape's end hook. Realizing this, we began checking all our other tapes and had some pretty big revelations as to why some of our cuts recently had left us more than a little long. Once you begin checking your tapes with the Lixer, it's difficult to stop until you run out of tapes. It's fun to use, and so simple you'll wonder why you hadn't done it earlier."

to see the complete review please visit Protool Reviews  



Here at Knapheide Manufacturing we use the Lixer tool for calibration of our tape measures. The quick simple procedure takes seconds and assures we are covered for ISO certification standards. The tool is a quality piece and performs flawlessly time after time.

R. Garkie
The Knapheide Mfg. Co.

Accuracy is . . .

Accuracy is guaranteed not to exceed +/- .002 on any of the calibration lines of your Lixer or Super Lixer. A Certificate of NIST Traceability indicates +/- errors of these calibration lines so exactness can be targeted.

Accuracy is . . . Lixer Tools

Contact Us:

Thank you for your interest in Lixer Tools. If you have further questions, need additional information, or would like to make a special request, please email us at