Accusize - 12" x 0.001"/300mm x 0.02mm, Inch/Metric Dual Needle Precision Dial Caliper Stainless Steel, In Fitted Case, P920-S232 Hardened stainless steel Direct reading to 0.001"/0.02 mm on large clear dial Utilizes two separate needles for inch or metric readings Precision ground and micro-lapped Adjusting slide for fine adjustment Inside,outside,and depth measurements Hardened stainless steel Direct reading to 0.001&#039;&#039;/0.02 mm on large clear dial Utilizes two separate needles for inch or metric readings Precision ground and micro-lapped Adjusting slide for fine adjustment Inside, outside, and depth measurements 0.100&#039;&#039; single revolution Range: 12&#039;&#039;/300 mm Made of stainless steel throughout The measuring face is hardened and finished Inch/Metric Readings Set zero at any position Direct reading to 0.001&#039;&#039;/0.02 mm on large clear dial Utilizes two separate needles for inch or metric readings Precision ground and micro-lapped Adjusting slide for fine adjustment Inside, outside, and depth measurements