$248.95

Master Visual-Tactual Set Surface Roughness Comparator 2 to 125 microinch
[PN: M-15]

The Engineers Edge Master Visual-Tactual Set Surface Roughness Comparator set contains eight individual rectangular blocks (each block is 1-3/8" x 1-7/8") with fifteen replicated machine surface finish specimiens.  They are made of corrosion resistant electroformed nickel that are duplicates of actual conventionally machined surfaces.  There are fifteen replicated machined surface finish specimens ranging from 2 to 125 microinches.

The Master Visual-Tactual Set Roughness Comparator set is supplied in a protective velvet-lined case complete with engineering data and instructions.

Specifications:

  • One Hone, Lap, Grind with roughness average 2 microinches
  • One Grind with roughness average 4 microinches
  • One Grind with roughness average 16 microinches
  • One Turn or Shape Grind with roughness average 32 microinches
  • One Turn or Shape Grind, mill with Periphery - roughness average 63 microinches
  • One Turn or Shape End or Face Mill with Periphery - roughness average 90 microinches
  • One Turn or Shape End or Face Mill with Periphery - roughness average 125 microinches
  • Supplied in a leatherette case with engineering data and instructions.
  • Also available in metric with micrometer designations.

The Surface Roughness Scale provides an economical tool which permits roughness to be specified on the same basis as linear measurements. The surfaces presented are the result of years of research and engineering. Details covering this subject are now published in The American National Standards Institute (ANSI) specification titled: "Surface Texture, Surface Roughness, Waviness and Lay". ANSI/ASME B46.1

Surface Roughness Scale is made by a dual electroforming process wherein nickel is electrodeposited to provide an exact reproduction in intricate detail. The surfaces used in this scale are reproductions of accurately turned surfaces measured in microinches (millionths of an inch-  0.000001"). The numbers engraved alongside each surface are the average deviation from the mean surface expressed in microinches.

Easy to use:

Place the Surface Roughness Microfinish Comparator Scale alongside your work piece. Slide the scale so that the rectangle with the surface roughness you want is adjacent to the piece you are examining. Compare by drawing the tip of the fingernail across each surface at right angles to the tool mark. The feel of the fingernail contact must be the same if the finishes are identical.

Individually serialized, calibrated and certified comparators are available from Engineers Edge at an additional charge. These prices are subject to change without notice. Contact Engineers Edge to determine current price and lead time - Contact Form

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