Precision Instruments

Precision Instruments - Torque Drivers

Thank you for considering Precision Instruments for your next torque product need. Since 1938, Precision Instruments has been a family-run business and one that continually strives to provide the highest quality torque products.

In 1938, K.R. Larson founded Precision Instruments, Inc. to manufacture the first dial-type torque wrench. Now 65 years and 65 patents later, Precision Instruments has become a leader in the industry, known for providing the most accurate, dependable and reliable torque wrenches in the world. Precision Instruments provides the tools that industry can trust to perform in demanding environments. Our mission at Precision Instruments is to design, manufacture and produce torque equipment for demanding applications where compliance with torque specifications is absolutely necessary for safety and performance.

Since its incorporation, Precision Instruments has been a family owned and operated business. Precision Instruments' philosophy, of providing quality and service above all else, has been the key to the company's success. Based on that philosophy, the 65-year tradition of producing all products in-house continues today. All of Precision's press work, milling, drilling and turning is done inside our state of the art machine shop. After machining, all polishing, welding, plating, assembly and calibration is conducted on-site at precision. The result is that in every way Precision products are products of Precision employees. From their pride in their work comes the quality only found in products that are hand-crafted. The tremendous accuracy, dependability and attractiveness that transcends all product lines is the direct result of products produced with that philosophy.

We understand that for critical applications, "tight enough" simply isn't "good enough." Additionally, "good enough" isn't the same as "correct." Thousands of applications exist where fasteners must have the correct amount of torque applied to truly perform. For those applications, Precision Instruments provides the tools you can trust.

History:
From the invention of the torsion bar dial type wrench and split-beam click wrench, to the most reliable micrometer adjustable click wrench, Precision Instruments has always been a leader in innovation.

Precision Instruments was incorporated in 1938 to pursue the manufacture of the first torsion bar dial type wrenches. Central to the very first patent, awarded five years later, were the tenants of accuracy, reliability, and durability that have become synonymous with the Precision Instruments name. Over the next 24 years, the company would refine and elaborate on the torsion bar dial type wrench with advances that include increased accuracy and signaling options.

The same principles of torsion bar wrenches were extended to torque drivers in 1962, and the design was awarded a patent. Seven years later, Precision Instruments unveiled torsion bar standards for us in torque testers. These devices paved the way for adequate testing of torque wrenches in industries where a large number of torque wrenches are used. Virtually all modern torque testers trace their roots to this devices.

In 1974 Precision Instruments successfully launched the split-beam click wrench market with the introductio of the C line. The wrenches solved many of the problems with traditional micrometer adjustablt click wrenches and was awarded several patents. By the early 1990s, Precision Instruments released the MD series of fully releasing drivers and received a patent for the design, detailing the mechanism for accurately applying torque with a fully-releasing driver type wrench. Precision Instruments also received a patent detailing the first mechanism for externally calibrating a micrometer-type torque wrench in both the clockwise and counterclockwise directions and with regard to spring rate. This patent was combined with a patent that allowed for the elimination of 95% of the friction in these wrenches.

Precision Instruments spans two buildings and occupies 50,000 square feet of floor space in Des Plaines, IL. The plant oversees the manufacturing of tools from start to finish. The plant performs press work, conventional and CNC turning, conventional and CNC milling, drilling, off-hand and robotic polishing, mass-media finishing, plating, welding, assembly, calibration, packaging and shipping. Statitistical process control dictated by written quality control manual ensures that the components remain within specified tolerances at high confidence levels.

Precision Instruments has a dedicated tool and machine development department. This department designs and produces nearly all the tooling and specialty machines used in-house. From press dies to specialy cutters and robot programming, this department allows Precision to efficiently design and implement sophisticated solutions to complex machining. This flexibility allows Precision to stay on top of cutting edge manufacturing and continually offer advancement in quality and reliability to our customers while maintaining efficeint manufacturing techniques.

Related Information:
Wrenches - Index Page


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