"When we think about making a simple measurement such as an outside diameter, many methods can be used. These would include calipers, micrometers, mechanical snap gages, air snaps, CMMs and special fixture gages, just to mention a few.

The problem with all these methods is that while each is good in its own right, there may be a bias seen among them. Each method has slight variations that can cause differences in result. Possible variations are gaging force, different process methods (such as the difference between contact and air gaging). Different measuring techniques include a CMM doing average diameters as opposed to a caliper using two point measurements..."

Character Quote of the Month

"A strong positive mental attitude will create more miracles than any wonder drug." - Patricia Neal

"Sure, coordinate measuring machines (CMMs) indicate the accuracy of parts, but who checks the accuracy of CMMs? Over the years, Helmel Engineering used several laser calibration systems to calibrate the scales on its CMMs and performing in-field service prior to standardizing on Optodyne, Inc.’s laser calibration system.

'The Optodyne system has sped up our process by a factor of five, allowing the use of smaller measurement increments', says Art Whistler, vice president of sales and marketing at Helmel Engineering. 'This provides a much better correction factor.'..."

Gentleness is a close cousin to meekness and self-control.  All three of these qualities require (contribute to) conquering anger.
   In dealing gently with others, a man or woman must refrain from irritability.  It is inevitable that irritations will develop, but nothing will destroy the trust and considerate fellowship of gentleness so quickly as anger.  There is a time for anger, but such times are rare – and there is never a place for uncontrolled anger.