Measuring kit:falling line, also known as plumb, is mainly used to measure the verticality of objects, and is more common in construction engineering,vertical hammer
Plumb bob:plumb can be used to plumb walls and other objects over your reference point when using optical instruments,wire hammer
Measuring tool:professional and practical design with , easy to carry and use,pendant hammer
Hammer pendant:this plumb is for checking vertical building structures,building measuring tool
Building measuring tool:plumb bob is a skill that technicians must possess, plumb bob is mainly used to measure verticality,measuring tool