Universal Calibrang Machine
(UCM) Manual
(PM-5201)
Morehouse Instrument Company, Inc.
1742 Sixth Ave., York, PA 17403-2675 USA
Phone: (717) 843-0081
www.mhforce.com
Page 4
Rev. 03/2024
1. Introducon
1.1 Origin and Use
Morehouse Universal Calibrang Machines were originally developed to use the high accuracy of Morehouse
Proving Rings to calibrate working load cells. Today, calibrang machines are used in industrial, government,
and military laboratories to calibrate load cells, force transducers, dynamometers, load rings, force links, and
other force measurement devices.
1.2 Funconal Operaon
The Morehouse Universal Calibrang Machine is a device for simultaneously applying a force to a reference
standard and the device to be calibrated (unit under test). The force is produced by a hydraulic jack acvated
by a manually operated pump, specially designed as a force machine with low errors. The calibrang machine
is used to calibrate compression-type and tension-type instruments. The calibraon reference standard is al-
ways loaded in compression, even when calibrang an instrument in tension.
Figure 1: Morehouse Universal Calibrating Machine 1,000,000 lbf Capacity