Base dimensions 80 x 63mm, spindle length 300mm, scriber length 175mm. A basic tool for machinists and toolmakers, it is used for accurately scribing lines, transferring measurements or probing surfaces in inspection work. A fully hardened and ground base serves as an accurate reference surface. A machined Vee groove in the base allows the gauge to be used on curved surfaces. A Vee groove at the front end lets the spindle adjust to any angle above or below the base, allowing it to be used both as a height gauge and a depth gauge. Two retractable pins allow the gauge to be located against the edge of a surface plate or T-slot for linear work. A 1/4" (6.35 mm) hole in the spring loaded scriber holder allows a dial indicator to be attached for checking flatness, parallelism, heights, depths etc. Grooves on the side of the base give a comfortable grip. Well tapered scriber for better sighting while working. The scriber is hardened to RC55-60 and is tapered for a good view of the work.