About Us
Keep your business running according to your exacting standards. Heise is a trusted source for precise pressure measurement instruments around the world.

A Legacy of Precision and Reliability for Your Most Challenging Requirements
In 1850, Edward Ashcroft met Eugene Bourdon in Paris and subsequently purchased the patent rights to produce his invention ̶ the Bourdon Tube ̶ in the United States. It was a revolutionary design and is still the most commonly applied elastic element in mechanical pressure gauges today.
More than 60 years later, an Ashcroft employee named Otto Heise began to refine the Bourdon tube and the pressure gauge to yield higher accuracy. Since starting his own precision gauge company, these gauges have remained the gold standard for mechanical pressure instruments. But more was yet to come. Evolving technology has led to Heise® electronic pressure indicators and transducers with even greater accuracy.
Today, Heise® precision pressure instruments of Ashcroft Inc. and continue to lead the way in high accuracy pressure measurement.
- Otto W. Heise started the Heise Bourdon Tube Company in the late 1920s
- In 1973, Ashcroft Inc. purchased Heise® from Otto Heise.

2022 Heise Trade Shows
April 11th - 14th, 2022
Victoria Trade & Convention Center
Victoria BC
Western Gas Measurement
April 12th - 13th, 2022
Double Tree by Hilton
Lafayette, Louisiana
Acadiana Flow Measurement Society
May 10th - 12th
OKC Convention Center
100 Mick Cornett Drive,
Oklahoma City, OK
ISHM Conference
May 16th - 19th, 2022
Anaheim Hilton Hotel
Measurement Science Conference
September 19th - 22nd
Marriott Houston Westchase
Houston, Texas
American School of Gas Measurement Technology
Instrument Solutions to Keep Your Business Running
At Heise, we can help ensure that your application has the most accurate and repeatable pressure measurements to solve your most challenges processes.
Contact Us
Where To Buy

You need a trusted partner to manufacture your pressure measurement instruments as well as calibrate and validate them to help keep your business running.
The pressure measurement instruments are available in a variety of device types, ranges and accuracies. we serve to help keep your business running according to your standards:
- Pressure Gauges
- Volume Controllers & Hand Pumps
- Digital Pressure Indicators & Handheld Calibrators
- Analog & Digital Pressure Transducers

Heise maintains partnerships with representatives to ensure all of our customers receive the sales and product support they need to ensure the safety of their people, processes, and profits. Our representatives offer more than sales support.
Explore Ashcroft Inc.
Heise, along with Rueger, Stiko, Weksler and Willy, is a part of that family of brands owned by Ashcroft Inc., a global leader in pressure and temperature measurement.
Ashcroft is dedicated to helping protect our customers’ people, processes, and profits. Meet the team that leads the way.
Each of our facilities offers unique expertise and the opportunity for global collaboration. Contact us with your questions or if you need more information about Ashcroft instrumentation.
Stay up-to-date with what's happening at Ashcroft.
Ashcroft is governed by regulatory and international statutes that place a range of obligations on our employees throughout the world. We observe national and international foreign trade laws and manage our businesses in accordance with the requirements of the countries in which they operate.
Ashcroft is committed to the manufacture and delivery of superior products focused on protecting our customers’ people, processes, and profits. Our products are manufactured at ISO-certified facilities to assure the highest levels of quality control.
Ashcroft maintains a variety of globally Registered Trademarks and Service Marks.

Working at Ashcroft
A global company with over 1,000 employees in 15 countries, Ashcroft celebrates diversity, talent, and collaboration. Our dedication to innovation is inspired by a shared commitment to great work and to each other. Take a look at why Ashcroft is a great place to grow your career.

Contact Heise
Heise is a trusted source for precise pressure measurement instruments around the world. Learn more about how we can help verify your most challenging product requirements where precision matters most.