The part number of the standard AR20 to AR60 round type pressure gauge is “G36-10-01,” or “G46-10-01”(for the R thread type).
For example, the part number of the AR30-03BG-A pressure gauge is “G36-10-01.” Details on the round type pressure gauge (with color zones) can be found
https://www.smcpneumatics.com/Part-Builder-Links_ep_2458-1.html?https://smccatalog.partbuilder.smcpneumatics.com/support/faq/en-jp/?ca_id=vacuum-regulators&fa_id=10961
GD40-2-01 T0425 (0.5 m) H04-01 (1 pc.) DL04-01 (1 pc.)
Option: Pressure gauge G15-10-01 How to Order NARM2000-4A2-N01G G15 P10 01 Symbol Units Nil MPa P PSI Common IN Individual IN IN M5 x 0.8 .39 (10) Max. pressure indication 10 150PSI (1.0MPa) .59 (15) IN OUT OUT *Pressure gauge for 30psig (0.2MPa) is not available.
Size: 20, Backflow Function: K (Backflow Function), Thread: Rc, Port Size: 01 (1/8), Accessory: G (Round Pressure Gauge w/Limit Indicator), Specifications: 1 (0.005 to 0.2 MPa Setting)
Size: 20, Backflow Function: None, Thread: F (G), Port Size: 01 (1/8), Accessory: E (Square Embedded Pressure Gauge w/Limit Indicator), Specifications: 1 (0.005 to 0.2 MPa Setting)
Size: 20, Backflow Function: None, Thread: F (G), Port Size: 01 (1/8), Accessory: E (Square Embedded Pressure Gauge w/Limit Indicator), Specifications: 1 (0.005 to 0.2 MPa Setting)
Size: 20, Backflow Function: K (Backflow Function), Thread: F (G), Port Size: 01 (1/8), Accessory: H (Set Nut for Panel Mount), Specifications: 3 (0.008 to 0.6 MPa Setting)
Size: 20, Backflow Function: None, Thread: F (G), Port Size: 01 (1/8), Accessory: E4 (PNP Output, Electrical Entry: Wiring Top Entry), Specifications: 1 (0.005 to 0.2 MPa Setting)
Size: 20, Backflow Function: None, Thread: F (G), Port Size: 01 (1/8), Accessory: E4 (PNP Output, Electrical Entry: Wiring Top Entry), Specifications: 3 (0.008 to 0.6 MPa Setting)
Size: 20, Backflow Function: K (Backflow Function), Thread: Rc, Port Size: 01 (1/8), Accessory: G (Round Pressure Gauge w/Limit Indicator), Specifications: 3 (0.008 to 0.6 MPa Setting)
.: 07 (ø1/4"), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller)
.: 07 (ø1/4"), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller)
.: 01 (ø1/8"), Actuator Type: 06 (Roller Plunger), Suffix: S (Hard Steel Roller)
.: 03 (ø5/32"), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller)
Pressure Range: L (0~100kPa), Port Size: 01 (Single Unit Mounting R(PT) 1/8), Output Specification: 15 (NPN Open Collector 1 Output, w/o Analog Output, 200° Setting)
Pressure Range: L (0~100kPa), Port Size: 01 (Single Unit Mounting R(PT) 1/8), Output Specification: 17 (NPN Open Collector 2 Outputs, w/o Analog Output, 200° Setting)
Pressure Range: L (0~100kPa), Port Size: 01 (Single Unit Mounting R(PT) 1/8), Output Specification: 18 (NPN Open Collector 1 Output, w/Analog Output, 3 Rotation setting)
Pressure Range: L (0~100kPa), Port Size: 01 (Single Unit Mounting R(PT) 1/8), Output Specification: 55 (PNP Open Collector 1 Output, w/o Analog Output, 200° Setting)
Pressure Range: 0~0.97MPa, Port Size: 01 (Single Unit Mounting R(PT) 1/8), Output Specification: 14 (NPN Open Collector 1 Output, w/o Analog Output, 3 Rotation Setting)
Pressure Range: 0~0.97MPa, Port Size: 01 (Single Unit Mounting R(PT) 1/8), Output Specification: 16 (NPN Open Collector 2 Outputs, w/o Analog Output, 3 Rotation setting)