RSK Precision Square Level Size/Senstivity per Minute: 4″ x 0.02/10sec 6″ x 0.02/4sec 8″ x 0.02/4sec A high-accuracy measuring tool designed for precise leveling, squaring, and alignment tasks in workshops, construction, and industrial applications. Crafted from durable, high-quality materials, it ensures long-lasting performance and reliable readings. Its precision-engineered design allows for accurate 90° angle verification, straight edge alignment, and surface leveling. Ideal for machinists, fabricators, and professionals who require dependable and consistent measurements in demanding work environments. Made in Japan