appearance Measurement Ended as Markings Changed in Appearance

The appearance of the markings changed when there was no change in strain.

Considerations

If Measurement ended unexpectedly and this indicator is active, consider the following causes:

  1. A slack load-train caused the specimen to move, rotate, or twist.

    Apply more preload to the load train to prevent movement, then reset Vector with a “handstop”.
    See Specimen Moved for more information.
_images/handstop.png

  1. Vector lost full line of sight to the Markings.

    In particular, check for obstructions by a grip or fixture, even marginally.
    See section on Obstruction for more information.

  2. Markings have not been applied as per the Marking Guide.

    Clean and reapply markings aligned to the specimen. In particular, ensure the correct amount of ink has been used so that the markings are neither smudged or patchy. In some cases a contrasting basecoat may be required.
    See Specimen Marking for more information.