MEASUREMENT OF SIZE DEVIATION Design Drawing Design Requirement

Design Requirement for the Diameter of the Hole Unit（ mm ） name basic size

Values of Standard Tolerance Grades for Nominal Sizes Up to 21

Design Requirement for the Diameter of the Hole Unit（ mm ） Basic size Lower

Measuring Tools Micrometer Digimatic caliper Dial Bore Gauge

Dial Bore Gauge dial Indicator bar clasp locking knob guiding protective-bridge hand shank moveable

Dial Bore Gauge Performance Range: 18 - 35 mm Resolution: 0. 01 mm

Micrometer screw clamp sleeve(with main scale) ratchet knob anvil spindle thimble (with rotating vernier

Micrometer screw clamp (lock) sleeve(with main scale) ratchet knob anvil spindle thimble (with rotating

Micrometer Performance Resolution: 0. 001 mm Accuracy: ± 0. 002 mm

Digimatic Caliper Jaws( for measuring inner dimensions) screw clamp vernier scale stem (for measuring

Digimatic Caliper Performance Resolution: 0. 01 mm Accuracy: ± 0. 03 mm

Find the Shortest Distance anvil spindle The vertical distance is the shortest distance.

How to Get the Size of the Hole N: the number of the limit

How to Get On-centre Spacing of Two Holes L = ( L 1 +

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MEASUREMENT OF SIZE DEVIATION

Design Drawing

Design Requirement for the Diameter of the Hole Unit（ mm ） name basic size lower deviation Hole 1 25 0 Hole 2 25 0 Upper deviation Min limits of size Max limits of size

Values of Standard Tolerance Grades for Nominal Sizes Up to 21

Design Requirement for the Diameter of the Hole Unit（ mm ） name basic size lower deviation Upper deviation Min limits of size Max limits of size Hole 1 25 0 0. 021 25. 000 25. 021 Hole 2 25 0 0. 021 25. 000 25. 021

Design Drawing

Design Requirement for the Diameter of the Hole Unit（ mm ） Basic size Lower deviation Upper deviation Min limitsof size Max limitsof size 120 -0. 1 +0. 1 119. 9 120. 1

Measuring Tools Micrometer Digimatic caliper Dial Bore Gauge

Dial Bore Gauge dial Indicator bar clasp locking knob guiding protective-bridge hand shank moveable anvil interchangeable anvil base

Dial Bore Gauge Performance Range: 18 - 35 mm Resolution: 0. 01 mm

Micrometer screw clamp sleeve(with main scale) ratchet knob anvil spindle thimble (with rotating vernier scale) frame insulating panel

Micrometer screw clamp (lock) sleeve(with main scale) ratchet knob anvil spindle thimble (with rotating vernier scale) frame insulating panel

Micrometer Performance Resolution: 0. 001 mm Accuracy: ± 0. 002 mm

Digimatic Caliper Jaws( for measuring inner dimensions) screw clamp vernier scale stem (for measuring depths) main scale Jaws( for measuring outer dimensions)

Digimatic Caliper Performance Resolution: 0. 01 mm Accuracy: ± 0. 03 mm

Find the Shortest Distance anvil spindle The vertical distance is the shortest distance.

How to Get the Size of the Hole N: the number of the limit position relative to the zero scale line in the clockwise direction D = 25. 000 – N * 0. 01 in the counter-clockwise direction D = 25. 000 + N * 0. 01

Digimatic Caliper

How to Get On-centre Spacing of Two Holes L = ( L 1 + L 2) / 2; L 1 : the distance of the nearest edges of the two holes; L 2 : the distance of the farthest edges of the two holes;

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