The article particular dissertated how to control the align deviation value in the process of investing material,convolving,installing etc of pressure vessel.

Study of the base ruler's creep-feed grinding process of the capacitive displacement sensor based instrument for measuring welded joint angularity and stagger joint;

A complete of perfect measure for manufacturing process is taken and put into effect to satisfy the requirement of miss-match of welding joints and the requirement of relevant.

The Indian Iron and Steel R& D Center has researched out a kind of laser displacement inspection device for online inspecting steel pipe diameter and weld offset for the SSAW pipe factory of India RSP company which is an underling of Indian Iron and Steel Management Bureau.

It is found herein that the horizontal spaces between all the vertical lines within the moving distance of the cable can be directly observed with the function of opposite-side survey of the total station.

The Basic Principle and Accuracy Analysis of RDM With Electronic Total Station;

DISCUSSION ON THE ACCURACY AND OBSERVATION FIGURE OF RDM;