Dial indicator is a handy yet precision engineered tool letting me scrub across flat horizontal sheet metal, positioned onto vertical planes or even going around concentric shapes. The ergonomic boom arm pivots to align while stabilizing the dial using magnetic anchoring on the heavy duty metal base and rigid tightening knobs. Its precise when close to zero dial position yet also spans to handle wider range of measurement for working on larger surface areas. That's where having its set of 22 removable contacts of pointed sub 1mm to 4mm matters. Solidly engineered system and fits inside a blow molded hard toolbox to store and protect both measurement dial and base.