This high-quality outside spring caliper is made of steel material and is designed for accurate measurements. It has a size of 150mm or 6 inches and a height of 148mm. The caliper features an external spring and measuring technology for precise and reliable measurements. The unbranded caliper model  is a handy tool for measuring and layout tasks and is suitable for both metric and imperial systems of measurement. It weighs 83 grams plus any packaging and is made in France. This unit quantity product is ideal for DIY tools and workshop equipment and can be used for various applications.has a quick adjust feature ! its actually a "nats" under 6!