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Calipers

Vernier calipers according to DIN 862

Pocket calipers with depth gauge are suitable for 4-way measurement, according to the examples of use show below. Workshop vernier calipers have split and rounded jaw ends (nibs) for internal measurement, the knife points are used for measuring in slots and grooves (see fig.).

Error limits according to DIN 862
The error limits (G) specified according to DIN is applicable for measurements without change of direction of the measuring force. For measurements withchange of direction and for measurements with the depth gauge, the values for digital calipers increase by 20μ; for calipers with round scale or vernier, thefollowing formula is applicable: G = (20 + l/10)μ >50μ

Values A = Vernier 1/10mm or 1/20mm, Values B = Vernier 1/50mm, Values C = Digital reading 0.01mm

Vernier 1/10mm or 1/20mm, Vernier 1/50mm, Digital reading 0.01mm

Range
mm 		A
(G)μ 		B
(G)μ 		C
(G)μ 		                Range
mm 		A
(G)μ 		B
(G)μ 		C
(G)μ
50 50 20 20   600 80 30 30
100 50 30 30   700 90 40 40
200 50 30 30   800 100 40 40
300 50 30 30   900 110 40 40
400 60 30 30   1000 120 40 40
500 70 30 30   1200 140 50 -

Overview of the IP class according to DIN EN 60529 (approximated) – IP = International Protection
Example: IP 67 = dust-proof and protected from sporadic immersion in water!

Protection against impurities and dust             Protection against moisture
IP 1x Impurity > 50 mm IP x1 Dripping water vertical
IP 2x Impurity >12.5 mm IP x2 Dripping water up to 15° incline
IP 3x Impurity >2.5 mm IP x3 Spray water up to 60° incline
IP 4x Impurity >1.0 mm IP x4 Spray water
IP 5x Protected from dust IP x5 Hose water
IP 6x Dust-proof IP x6 Strong hose water
IP x7 Sporadic immersion
IP x8 Continuous immersion

Vernier reading
According to the model of the calipers, the following versions are used: