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Torque Wrench Calibration Services in California

Biotechnical Services Inc. (BTS) offers lab calibration services and lab equipment repair in California while being a leading provider of meter calibration services in San Francisco. They also operate from San Diego, Los Angeles, Arizona, Nevada, and Utah. Being in the industry for more than 31 years, they also provide asset management and second-hand lab equipment sales.

Best Torque Wrench Calibration Services

Torque wrenches are tools used to tighten a bolt or a nut to a specified level of tension. They are used in a number of common specialties that include:

  • General mechanics
  • Construction
  • Industrial repair and maintenance 
  • Aerospace 
  • The automation industry 

Biotechnical Services Inc. has been certified by the American Global Standards, LLC (AGS) and accredited by the American Association for Laboratory Accreditation (A2LA). Our services and procedures adhere to strict guidelines and regulatory standards, which guarantee the best torque wrench calibration service in the area that outweighs their competitors. 

Our engineering teams are also highly qualified and knowledgeable in their specialized fields and in calibration services. Our scientists are encouraged to develop and enhance their existing skills, and quality is of the utmost importance to the company.

Why Is Torque Wrench Calibration Necessary?

The most important reason why your torque wrench should be calibrated is for safety. People and equipment are affected if your torque wrench is not calibrated correctly and often enough. Not calibrating your torque wrench also affects the accuracy of its use, and can lead to manufacturing issues or machinery not working efficiently. The minimum permissible calibration error is 5%, so an error percentage beyond that could mean serious consequences for production and safety. 

How Often Should You Calibrate Your Torque Wrench?

According to industry standards, torque calibration is usually recommended to be done every six to twelve months or more frequently in exceptional circumstances. For accuracy requirements, it is also recommended that you calibrate your torque wrench at a six to twelve-month calibration period. 

How Do You Know When to Calibrate Your Torque Wrench?

It is helpful to keep a calendar or log when last each calibration service was performed so that you know when your next service is due. Other factors that might cause you to calibrate your torque wrench more frequently are how often you use it, if it is subject to frequent overload, if it has been improperly stored, if there is any damage to it due to improper use, or if the torque wrench is particularly old.

What Types of Torque Wrenches Do We Test?

Biotechnical Services Inc. tests and calibrates many different types of torque wrenches, including:

  • Beam or deflection torque wrenches use a simple mechanical system where a scale or dial shows the amount of torque equivalent to the handle’s deflection
  • Dial torque wrenches use an electronic strain gauge located inside the handle that sends a signal to an LED window that tells you your reading
  • Clicker torque wrenches use an adjustable ring wrapped around the base of the handle that clicks when you reach the exact torque or tension that you want to apply to a nut or bolt

It is important that a service provider knows how to handle different types and brands of this piece of equipment, as this can affect the accuracy of your torque wrench capabilities after it has been calibrated.

How Are Torque Wrenches Calibrated?

Biotechnical Services Inc. offers exceptional torque wrench calibration services in California and the surrounding areas. Torque wrenches are calibrated by using a specified formula, as well as adjusting the calibration based on weight measurements. We use pre-determined calibration points to ensure that the process is completed accurately and efficiently and so that your torque wrench reaches its desired functionality again. 

How to Test Your Torque Wrench Calibrations?

The first thing you have to do is measure from the handle to the square drive of your torque wrench using a tape measure. You then need to mark and take down the point you have measured. The standard length of a torque wrench is usually 24 inches. You then need to secure your torque wrench square onto a bench vice, with the handle extended away from the bench, and then you need to insert the square drive into the vice and slowly tighten it until it feels secure.

An equation can then be used to calculate the appropriate weight setting, which is: handle distance times by the weight, divided by 12. Keep in mind that your figures will be different if your wrench is a different size or if you use different weights. You can now test your torque wrench by hanging a weight from the handle of the wrench. If the torque wrench clicks when the weight is applied, it means that the torque wrench is accurate. If not, you need to calibrate and correct your torque wrench. 

How to Correct Your Torque Wrench Calibrations?

You need to correct your torque wrench if it is inaccurate, so you can adjust it using the weight in the previous step. Usually, you can use a screwdriver to adjust the spring tension by turning the screw found in the wrench’s handle. Tighten the screw until the torque wrench clicks, then move the weight further up the handle until there is no click. Move your weight higher and lower until you find a point where your torque wrench clicks and where it does not, and make a mark on that transition point so that you know where that is. 

After finding this point, measure and record the distance from the square drive to that transition point. You can use a measuring tape and record the measurement on a piece of paper. Then you will need to calculate the applied torque with the equation used in testing the calibration, except this time using the transition distance. You will then divide the initial calculation with the measurement you took on the transition point to find the torque number, and then multiply this by the difference to correct the settings of your torque wrench. Using Biotechnical Services Inc. will ensure the most correct and efficient calibration service for your torque wrench.

Torque Wrench Calibration Cost

The average cost of torque wrench calibration can range from $30 to over $200, depending on aforementioned factors such as the condition, age, average usage and last service of your torque wrench. Feel free to get in touch with us for a more accurate evaluation of your torque wrench calibration cost and process. 

California’s Lab Equipment Specialists

Biotechnical Services Inc. offers repair, validation, and sale alongside calibration. We differ from our competitors due to being the go-to place for many aspects of lab equipment. We also place emphasis on our quality and standards when it comes to calibration and repair services. 

Feel free to explore other calibration services offered by Biotechnical Services Inc. A few examples of the calibration services we offer are:

Torque Wrench Calibration Service Customized to Your Needs

Biotechnical Services Inc. (BTS) caters to all your calibration service requirements and offers a variety of services and collection options that are modified to your individual needs.  


Equipment can be mailed to a specified address if you prefer. We make sure to pack any delicate equipment extremely carefully, and so that it arrives to you safely. 



Each one of our branches have dedicated pickup points, that allow you to order online and collect the order yourself instead of having it delivered. 


We provide efficient delivery services for your convenience. All Orders are processed for shipping Monday through Friday 9:00 – 5:00 PM Pacific Time. We aim to have orders delivered within 24 hours if your specified item is in stock.


An array of labaratory equipment can be bought at any of our on-site premises. This allows you to view and pick the item that best suits your needs. 


Biotechnical Services Inc. provides incredible lab equipment repairs, asset management, secondhand lab equipment sales, and specialized services which include torque wrench calibration in and around California. After three decades in the industry, quality and excellence are of the utmost importance and we ensure that we offer the best service in the business. Contact us today for your next calibration service.