Concrete is one of the construction materials that are commonly used to build buildings, bridges, roads, and so forth. Concrete itself is made from a mixture of fine aggregates such as sand, coarse aggregates such as gravel or stones, or other types of aggregates with water added to soften concrete dough. Concrete is considered as a strong foundation so it is widely used for various applications. Well, construction workers need to know the strength of the concrete so that the quality of the concrete it produces is good. Especially for reinforced concrete work that is prone to irregularities, for example the capacity of reinforced concrete structures that are less sturdy so that it can be fatal. Therefore, it is highly recommended to measure the quality of concrete and reinforcement with various concrete hardness test equipment such as rebar locator, crack depth gauge, rebar corrosion detector, rebar width gauge, and concrete test hammer.