Gauge markers, 3 white diamonds on black background 50 pieces, TRVIEWX

GAUGE MARKERS, 3 WHITE DIAMONDS ON BLACK BACKGROUND, 50 PIECES, TRVIEWX. 3 white diamonds on a black background gauge markers for TRViewX non-contact video extensometers and width sensors. These gauge markers are suitable for use with flat dark plastic and flat dark metal specimens, have a temperature range of -20 to 150?C, and include 50 pieces..