This 35mm diameter mushroom-shaped tip is machined from solid brass and are a useful additional accessory for the Veritas Bar Gauge. It's greater diameter provides a larger reference face when hooking over edges for outside measurements. They are reversible for inside measurements. With the flat side facing out, they provide a wide, stable platform for the bar gauge when taking a vertical measurement. Using a bar gauge is a fast and highly accurate method of transferring a measurement. Sold singularly, made in Canada