What are Calipers? Ask a machinist, “What tool do you use most often?” Most likely the answer will be, “my calipers.” For centuries calipers have been utilized to determine the dimension of an object. Typically having two jaws and a depth rod used to measure inside/outside diameters, lengths and depths. A caliper is much more…
Trimos SA has recently launched three brand new calibration benches, the HC3, the HC4 and the HC5.. The HC-line is designed for the calibration of fixed and variable dimension measuring equipment. The ergonomic design and reliability of these instruments, as well as their accuracy and ease of use, meet the most stringent requirements and increase…
The 3 D’s of Straightness Plugs We have touched on the many different applications of air gaging in a number of articles: size, match gaging, and form applications such as taper. In this column, we will discuss air straightness plugs and how they work. The typical out-of-straightness condition is seen as a “bow” form within…
Mahr’s Micromar 40 EWRi-L Digital Micrometer offers integrated wireless data transmission in addition to a quick drive spindle, where one turn of the thimble is now equal to 5 mm (0.2 in) of spindle travel. Moving to different sizes on a sample part is now 10-times faster than with a standard micrometer. Product features include:…
Measuring Squareness with Air The right angle is one of those things that man has created in his mind. In nature, it only happens by chance. But the importance of this concept—which results from the perpendicular intersection of lines or surfaces—applies to many things, including architecture, civil engineering, agriculture, and manufacturing. There are a number…
Documenting the Measuring Process Statistical quality control (SQC) has been in use since the 1930s, when it was performed with paper, pencil, and maybe a slide rule. As such, it was originally somewhat time consuming, and it required a fairly high level of care and understanding on the part of its practitioners. SQC got a…