Dimensional Calibration

Dimensional Calibration

Dimensional and Mechanical Calibration

  • Depth Gauges
  • Indicators (Dial/Digital/Test)
  • Snap Gauges
  • Feeler (Thickness) Gages
  • Tape Measures & Steel Rules
  • Precision Levels & Steel Squares
  • Protractors & Angle Gages
  • Tachometers
  • Timers & Stopwatches
  • Coating Thickness & Thickness Meters

Dimensional Calibration – Including Hand Tools

Dimensional calibration, sometimes referred to as “hard gauging” calibration, is essential to almost all industries, especially manufacturing. These gauges and hand tools are often used on a daily basis and their results are depended upon to ensure quality and safety. Due to the frequency of use and demands placed on these tools, it is highly recommended that they be placed on a semi-annual or annual calibration interval.

PCS uses a state of the art Pratt & Whitney Universal Supermicrometer which is a highly precise (accurate to 10 microinches) and versatile measuring instrument used to calibrate hard gauges such as pin gages, plug gauges, ring gauges, and thread plug gauges (Click to learn more).  In Addition to pins, plugs rings and threads, The Pratt & Whitney is also used to calibrate 1-2-3 blocks, ball gauges, length standards, ID micrometers, dial indicators, digital indicators, test indicators, snap gauges, feeler gauges and thickness gauges.

Superior gage masters are used to calibrate a wide range of gauges and measuring hand tools. Gage blocks are a primary part of our procedures for calipers, micrometers, bore gauges, depth gauges and height gauges. Depending on the size or type of the gauge we may also incorporate the caliper master, micrometer master, height master or master length standards to provide results throughout the measuring range. Tape measure and steel rule calibration is achieved by comparison to our master length standards and master steel rules. Precision levels, protractors and steel squares are calibrated in a similar way by comparison to our master level, master protractor and gauge or angle blocks.

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Mechanical Calibration

Our mechanical calibration capabilities include many different instruments such as Hardness testers, Tachometers, Coating thickness meters, thickness meters, and much more. One of the most widely used pieces of equipment in this field of calibration is the Hardness tester. Hardness testing provides critical material performance information and insight to the durability, strength, flexibility and capabilities of a variety of component types from raw materials to prepared specimens and finished goods. Hardness testing is widely used in a multitude of industries and plays a particular significance in structural, automotive, aerospace and many other forms of manufacturing.PCS has the capability to calibrate Rockwell, Knoop, Vickers and Brinell hardness with hardness block reference standards and Brinell scope lab masters. We also have the capability to calibrate Brinell scopes using our glass scale lab master.

Through experience and reputable resources we have successfully added the instruments above to an on-going list of additional services. PCS continuously builds upon its calibration capabilities by researching new ways to apply our multifunctional test equipment. If you do not see your equipment listed here, please contact us to discuss your specific needs.

PCS is a proud distributor of  Product_1,  Product_2,  and Product_3 measuring equipment manufacturers and can help with replacement or new equipment needs.

On-Site Calibration Services

At PCS, we provide on-site calibration services to customers located in Tennessee, Virginia, Alabama or Kentucky. If your facility is near one of the following locations, we can perform your required Dimensional and Mechanical calibration services on-site:

  • Knoxville, TN
  • Johnson City, TN
  • Nashville, TN
  • Bristol, TN
  • Murfreesboro, TN
  • Kingsport, TN
  • Chattanooga, TN
  • Abingdon, VA
  • Huntsville, AL
  • Decatur, AL

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Accreditation and Documentation

All calibrations are NIST, (National Institute of Standard and Technology) traceable and include “long form” calibration certificates with as-found/as-left data.  ISO/IEC-17025 accredited calibration is available upon request. We also offer a web based calibration interface, “e-certificates” that gives you access to electronic copies of your calibration certificates which can be viewed and printed at your convenience. Standard turnaround time is 48 hours.

Cylindrical Pin Gages, Plug Gages, Ring Gages

PCS has the capability to calibrate all classes of Go, No-Go and Master cylindrical pin, plug and ring gages, XX – ZZ. These gauges are very simple, but also very effective. With proper use, these precision tools can measure to a high degree of accuracy. Pin and plug gage calibration is performed by mastering the Universal Supermicrometer with our high precision gage blocks and then measuring the outer diameter. Ring gage calibration is performed by mastering the Universal Supermicrometer with our high precision master ring gages and then measuring the inner diameter with ruby tipped indicators at 0 deg top-middle-bottom and 90 deg top-middle-bottom positions.

Pin, plug and ring gages should be calibrated at least once per year and, if used excessively, this interval should be increased accordingly. Taking proper care of these gauges will help to maintain their calibration and over all life. After use, remove all fingerprints with a lint free cloth and apply a small amount of lubricant to prevent rust. Never force a pin or plug gage in to a hole or force a gage or part through the hole of a ring gage. This will cause galling: metal transferred from one part to another. Galling greatly decreases the accuracy of your gage.

Thread Plug Gages

PCS has the capability to calibrate all classes of standard UN, Metric, and NPT thread plug gages. Calibration is achieved with precision thread wires and the aid of software compatible to our Universal Supermicrometer to produce accurate results for Go and No-Go major and pitch diameters.

Pin Gauge General Information

Like many precision measurement tools, Pin gauges are very simple, but also very effective. With proper use and proper care, these precision tools can measure holes to a high degree of accuracy. The important words here are proper use and proper care. Pin Gauges are so basic and seemingly inexpensive, they are very often abused and misused a bit like reliable people who make few demands, others tend to take advantage of them!

Proper care for pin gauge sets

Your gauge pin set should be calibrated at least 1 time each year sometimes 2 times per year (depending on usage). Keep you sets clean and free from rust. After use, wipe the fingerprints off and return them to the box. Keep a sheet of rust-proofing paper in the top cover to help control rust. With simple care, your pins will last for many years.

Fingerprints often have a PH level of oil that causes rust. Some people have particularly high levels of this in their body oil and must take extra precaution to remove the fingerprints. Do not force the pin into the hole you are checking. This seems obvious, but in the rush to get things done, many pins become damaged for this reason. Gauling is when metal is transferred from one part to another. Gage pins can become damaged from gauling when forced into a hole that is simply too small. Take care to clean the hole, remove any burrs and chips. Any of these can cause gauling and ruin the pin gage.

Pin and Ring Gauge tolerances:
Tolerance Class
Inch Diameter
.010″ – .825″ .000010″ .000020″ .000040″ .000070″ .0001″ .0002″
.825″ – 1.510″ .000015″ .000030″ .000060″ .000090″ .00012″ .00024″
1.510″ – 2.510″ .000020″ .000040″ .000080″ .00012″ .00016″ .00032″
2.510″ – 4.510″ .000025″ .000050″ .0001″ .00015″ .0002″ .0004″
4.510″ – 6.510″ .000033″ .000065″ .00013″ .00019″ .00025″ .0005″
6.510″ – 9.010″ .000040″ .000080″ .00016″ .00024″ .00032″ .00064″
9.010″ – 12.010″ .000050″ .0001″ .0002″ .0003″ .0004″ .0008″
Metric Diameter
.254 mm – 20.96 mm .00025 mm .00051 mm .00102 mm .00178 mm .00254 mm .00508 mm
20.96 mm – 38.35 mm .00038 mm .00076 mm .00152 mm .00229 mm .00305 mm .00610 mm
38.35 mm – 63.75 mm .00051 mm .00102 mm .00203 mm .00305 mm .00406 mm .00816 mm
63.75 mm – 114.55 mm .00064 mm .00127 mm .00254 mm .00381 mm .00508 mm .01016 mm
114.55 mm – 165.35 mm .00084 mm .00165 mm .00330 mm .00483 mm .00635 mm .01270 mm
165.35 mm – 228.85 mm .00102 mm .00203 mm .00406 mm .00610 mm .00813 mm .01626 mm
228.85 mm – 305.05 mm .00127 mm .00254 mm .00508 mm .00762 mm .01016 mm .02032 mm

Tolerance Direction

Cylindrical Ring Gage Go Member is to the minus side, Nogo Member is to the plus side.

Cylindrical Plug Gage Go Member is to the plus side, Nogo Member is to the minus side.

Master Gages Tolerance is split 50/50