New Book Demystifies Metrology Decision Rules

With a combined wealth of experience, the authors have observed the challenges faced by the metrology community and seek to address them head-on.

“The comprehension and execution of decision rules appear to lack consistency, as many existing documents are hard to follow,” says Zumbrun, president of Morehouse. “Our goal is to offer simplified guidance that educates and inspires better practices within the metrology field and beyond.”

(Morehouse Instrument Co.: York, PA) — A trio of metrology industry veterans with more than 100 years of experience has co-authored a guidebook, Decision Rule Guidance, 1st Edition 2024, available for download.

The book is a call to action for the metrology community and related fields to elevate their measurement standards, ensuring safety, reliability, and efficiency.

The book, co-authored by Henry Zumbrun of Morehouse Instrument Co., Greg Cenker of IndySoft, and Dilip Shah of E = mc3 Solutions, offers foundational knowledge and practical calculations for implementing decision rules in measurement uncertainty. It promises to be an invaluable resource for professionals across various industries.

Zumbrun has more than 25 years of industry experience in metrology, specifically in force and torque measurements. Cenker is the senior metrologist and calibrations product manager at IndySoft. Shah is the most experienced of the three, and is a principal of E = mc3 Solutions, a consulting practice that provides training and consulting solutions in ISO/IEC 17025, ISO 9001, measurement uncertainty, and computer applications.

Written to bridge the gap in understanding and applying measurement rules and risks, the guide simplifies complex concepts into actionable insights. It aims to empower technicians, engineers, and decision-makers with the knowledge to make informed choices that enhance the quality, safety, and reliability of products and services.

Companies worldwide rely on Morehouse for accuracy and speed. The company turns around equipment in seven to 10 business days so customers can return to work quickly and save money.


Decision Rule Guidance comprehensively covers the three pillars of measurement—uncertainty, metrological traceability, and decision rules. It delves into specific and global risks, offering examples and calculations to guide readers through the nuances of measurement decision-making.