Dial indicator
Dial indicator:
• The Dial indicators are used to test or inspect the
size and trueness of finished work
• The measured accuracy is up to 0.01mm
• The measured accuracy is up to 0.01mm
Constructional Details:
• The dial indicator consists of a base, column, arm, dial indicator and stylus(work contact plunger)
• The arm can be adjusted at required height along the column
•
The work table is mounted on the base to provide a reference surface
• The work is placed on the work table during measurement
• The work is placed on the work table during measurement
Mechanism:
•
Very slight upward pressure moves the stem / plunger upward
• The movement is indicated by the dial pointer
• The dial is graduated into 100 divisions
• The full revolution of the pointer about the scale corresponds to 1mm of the plunger
• Thus a turn of the hand by one scale division represents a spindle travel of 0.01mm
• The movement is indicated by the dial pointer
• The dial is graduated into 100 divisions
• The full revolution of the pointer about the scale corresponds to 1mm of the plunger
• Thus a turn of the hand by one scale division represents a spindle travel of 0.01mm
•
The movement of stem is transmitted by means of a toothed rack through a gear
train
• This movement is obtained around a dial face
• The required measuring pressure is provided by small springs incorporated in the mechanism
• The indicator is adjusted zero by turning the rim of the dial
• The dial indicators are also available for ranges of measurement of 0-3, 0-5, 0-10mm.
• These measurements indicate the movement (left) of the plunger.
• This movement is obtained around a dial face
• The required measuring pressure is provided by small springs incorporated in the mechanism
• The indicator is adjusted zero by turning the rim of the dial
• The dial indicators are also available for ranges of measurement of 0-3, 0-5, 0-10mm.
• These measurements indicate the movement (left) of the plunger.
