According to IS : 4211—-1967, the gauges which help to identify the thread pitch of ISO Metric screw threads in the pitch range 0.25 to 6.0 mm are made in the form of 24 blades (made of suitable tool steel ...

Sampling Inspection Whenever a large number of parts are to be inspected, 100% inspection is not desirable. Firstly it is very expensive and secondly, the job will be very much monotonous for an inspector and due to fatigue of brain, he ...

Gauge Design To a greater or lesser extent, every gauge is a copy of the part which mates with the part for which the gauge is designed. For example, a bushing is made which is to mate with a shaft ; ...

Plain Gauges Gauges are inspection tools of rigid design, without a scale, which serve to check the dimensions of manufactured parts. Gauges do not indicate the actual value of the inspected dimension on the work. They can only be used for ...

This article is based on a similar article appearing in magazine "Machine Design” Vol. 47 No. 4. The measuring capacity in interferometers with lamp as source of light is limited because it is not possible to maintain the sharpness of ...

Radiography.    When we talk about radiographic inspection we include X-ray, gamma ray and variations of these methods. Basically, method involves passing rays through materials to be tested. Rays impinge on a film or screen, reveal and record the internal ...

X-ray   Examination:   X-ray Radiography. X-ray examination is a non­destructive method of detecting the presence and location of internal cavities or other discontinuities in materials. X-ray examination of materials may be carried out by processes known as  radiogrpahy,  and  fluoros­copy. ...