Linear Measurements – Straight Edges
Posted by mechlook info on January 23rd, 2012 07:35 PM | No Comment
Straight Edges
These are used for checking the straightness and flatness of parts in conjunction with the surface plates and spirit levels. These may be made of steel or cast iron. Steel straight edges are available up to 2 m length ...
Linear Measurements- V-BIock
Posted by mechlook info on January 22nd, 2012 11:59 AM | No Comment
V-BIock
These are widely used for workshop and inspection purposes for checking out the roundness of cylindrical workpieces and
for marking centres accurately, etc. Generally the angle of V is 90° and these are available in wide variety of shapes. Sometimes clamps ...
Linear Measurements- Cast Iron Surface Plates with Handles
Posted by mechlook info on January 22nd, 2012 11:58 AM | No Comment
Cast Iron Surface Plates with Handles (Refer Fig. 2 .44).
Brief Specifications. These Surface Plates are made of close grained high quality iron.
Casting strains are eliminated either by natural ageing or by artificial seasoning.
Grade A : Handscraped and spotted.
Accuracy : ±0.002 ...
Linear Measurements- Bench Centres
Posted by mechlook info on January 22nd, 2012 11:58 AM | No Comment
Bench Centres
Bench centre consists of a rigid cast iron base made from close grained cast iron having minimum hardness of 180 HB (free from distortion, porosity and other casting defects). The base is provided with suitable T-solts for the attachment ...
Linear Measurements- Spirit Levels
Posted by mechlook info on January 22nd, 2012 11:58 AM | No Comment
Spirit Levels
Spirit levels are used for measuring small angle or inclinations and also enable the position of a surface to be determined with respect to the horizontal.
A spirit level consists of a sealed glass tube, ground on its inside surface ...
Linear Measurements- Combination Set
Posted by mechlook info on January 22nd, 2012 11:58 AM | No Comment
Combination Set
This is the most adaptable and commonly used non-precision instrument to be used in layout and inspection work (Fig. 2.63).
The combination set consists of scale, squaring-head, protractor and centre-head. It consists of a heavy scale, which is grooved all ...
Linear Measurements- Universal Surface Gauge
Posted by mechlook info on January 21st, 2012 07:00 PM | No Comment
Universal Surface Gauge
This is a most versatile instrument used in non-precision measurements. It is generally used with surface plate for layout work and inspection. It consists of a rigid base whose bottom surface is made perfectly flat. A spindle carrying ...