Pressure Terms(KS B 5305)  Gauge pressure : Indicate pressure based on atmospheric pressure.  Pressure Gauge : Measure and Indicate the plus gauge pressure.  Vacuum pressure : (Pressure range : kgf/㎠ bar  Ductility pressure : Measures and displays the plus, minus gauge pressure.  Vacuum pressure : (Pressure range : kgf/㎠ bar) Grade 0.5 1.0 1.5 3.0 Size(mm) 150 200 100 150 200 60 75 100 150 200 60 Scale Division number 0 ~ -0.1Mpa 100 100 50 50 50 20 20 50 50 50 20 0 ~ 76cmHg 76 76 38 38 38 15 15 38 38 38 15 Standard pressure gauge : (Pressure range : kgf/㎠ bar, (Inside bracket) Mpa) Grade 0.5 1.0 1.5 3.0 Size(mm) 150 200 100 150 200 50 60 75 100 150 200 50 60 Scale Division number 1000 ~ 0 (100 ~ 0) 100 100 - 50 50 - - - 50 50 50 - - 500 ~ 0 (50 ~ 0) 100 100 50 50 50 - - - 50 50 50 - - 250 ~ 0 (25 ~ 0) 125 125 50 50 50 25 25 25 50 50 50 25 25 150 ~ 0 (15 ~ 0) 75 75 30 30 30 30 30 30 30 30 30 30 30 100 ~ 0 (10 ~ 0) 100 100 50 50 50 20 20 20 50 50 50 20 20 70 ~ 0 (7 ~ 0) 70 70 35 35 35 35 35 35 35 35 35 35 35 50 ~ 0 (5 ~ 0) 100 100 50 50 50 25 25 25 50 50 50 25 25 35 ~ 0 (3.5 ~ 0) 70 70 35 35 35 35 35 35 35 35 35 35 35 20 ~ 0 (2 ~ 0) 100 100 40 40 40 20 20 20 40 40 40 20 20