BQLZR 2 x Inside Outside Calipers 350mm Length Machinist Measuring Metalworking Tool

Feature:   
2 pcs silver tone metal inside outside calipers, great for measuring the external and internal size of an object.   
Firm joint calipers use friction at the joint to hold the legs unmoving.   
Outside calipers measure thicknesses and outside diameters of objects, inside calipers measure hole diameters and distances between surfaces.   
They have straight legs, turned out at the top and are used to take inside measurements.   
How to use:   
1.Method of Taking Size on Ruler   
Measuring surface of the outer calipers clamp foot against a ruler measuring the face, the other face of potential clamp foot size taken engraved line, and connect the two measuring surface should be parallel to the ruler. When using caliper, which takes the same size methods and outer calipers, but in the end face of a foot ruler shall rely on a secondary plane, also against the inside of the caliper plane.   
2.Caliper measurement   
Caliper measurement of the outer circle with center distance, make two wire clamp foot measuring surface perpendicular to the axis of a circle, without force, over the outer circle of the cylindrical weight calipers, caliper size of the opening is then outside the cylinder diameter.   
Caliper measurement of hole diameter when to make the connection jaw foot vertical measuring surface and intersects the bore axis, when measured against the pore walls of a clamp foot, the other a bit more inside clamp feet from some of the gradual opening out , and the swing in the circumferential direction of the cell wall, swing from the most hours of when, within the caliper opening size is the diameter of the hole.   
Note: medial and lateral tapping the caliper to adjust the size opening never allow knocking calipers, so as not to affect the accuracy of the caliper   
Specification:   
Material:Steel   
Color:Silver Tone   
Each Blades Max. Width:15mm   
Total Size: 8.8x35x1.45cm/3.46x13.78x0.57"   
Length: 350mm   
Weight:332g   
   
   
Package Include:   
1 x Pair Outside Inside Caliper