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Effective Diameter Measuring Micrometer (EDMM) is also commonly known as FCM or Floating Carriage Micrometer. This instrument is used for accurate measurement of 'Thread Plug Gauges'. Gauge dimensions such as Outside diameter, Pitch diameter, and Root diameter are measured with the help of this instrument. All these dimensions have a vital role in the thread plug gauges, since the accuracy and interchangeability of the component depends on the gauges used. To reduce the effect of slight errors in the micrometer screws and measuring faces, this micrometer is basically used as comparator.

Robust graded cast iron body. Seasoned for dimensional stability. Integrated “V” guide ways ground to finest accuracy. Micrometer least count - 0.0002 mm or 0.001 / 0.002 / 0.005 with non rotary spindle. Micrometer & fiducial have 8 mm dia spindle. Instrument accuracy maintained in accordance with NPL UK specifications The instrument is very useful for thread plug gauge manufacturers, gauge calibration laboratories, established under NABL accreditation and in standard room where inhouse gauge calibration is carried out.

Specification:

Optional accessories
BSPIL-MTR-A-03002A          Female Center 1 set
BSPIL-MTR-A-03002B          Thread Measuring Wire One Pairs
BSPIL-MTR-A-03002C          Thread Measuring Wire 21 Pairs
BSPIL-MTR-A-03002D          Cylindrical Master One No.
BSPIL-MTR-A-03002E          Cylindrical Master 28  Nos.
BSPIL-MTR-A-03002F          Thread Measuring Prisms Two Nos.
BSPIL-MTR-A-03002G         Thread Measuring Prisms Four Pairs (8 Nos)
BSPIL-MTR-A-03002H         Thread Measuring Wire 10 pairs
BSPIL-MTR-A-03002I           Thread Measuring Wire 8 pairs