Baker Outer Diameter Checking Gauges has Following Features:Gauge measures the OD of circular parts in a very simplest way.Inspector has to just put the gauge over circular periphery & the direct reading is shown on circular scale.It is very simplest method of checking OD above 40 mm.OD is checked very fast & less skill is required.Available in variety of sizes i.e. Range & LC ( Range from 50 to 300 ) .Baker Outer Diameter Checking Gauge, Model no. OD09, Range: 225-250mm, Resolution:0.5mm, Dial Reading: 225-250, Units/Pkg: 1, Warranty: As per manufacturer's warranty policy.