Refer to the AR-A/AR-B/AR-D series catalog excerpt, which has been reproduced below.
The part numbers of standard AR20 to AR60 round type pressure gauges are “G36-10-01” and “G46-10-01”(for the R thread type).
For example, the part number of the AR30-03BG-A pressure gauge is “G36-10-01.”

Using SMC speed controls with built in one-touch fittings minimizes installation time, reduces mounting height and enables a more compact machine design. These speed controls allow the body to be rotated to facilitate simple installation. Available in thread sizes from M3 to 1/2 in both inch (NPT) and metric R(PT) and with tube sizes from 3.2mm to 12mm OD (metric) and 1/8 to 1/2 OD (inch

Using SMC speed controls with built in one-touch fittings minimizes installation time, reduces mounting height and enables a more compact machine design. These speed controls allow the body to be rotated to facilitate simple installation. Available in thread sizes from M3 to 1/2 in both inch (NPT) and metric R(PT) and with tube sizes from 3.2mm to 12mm OD (metric) and 1/8 to 1/2 OD (inch

The VM series is a mechanical, poppet valve. Their compact size requires little mounting space. The VM series offers a wide variety of actuator styles and flow capacity up to 1.0 Cv.Actuator replacements for VM100, VM200, VM400 and VM800, Roller levers, plungers, toggle levers, rod levers, push buttons and twist selectors, MECH VALVE, VALVE, VM (VFM/VZM) MECHANICAL VALVE, DA, VM BODY

Body Size: 2 (1/8, 1/4), Type: 2 (Elbow), Control Type: 0 (Meter-out), Control Range: FM (1 to 50 mm/s), Indicator Window Direction: 0° , or None for FC, FM, Thread: N (NPT), Port Size: 01 (1/8), Width Across Flats [H]: 9mm or None for Body Size 2, Tube Size: 01 (ø1/8), Sealant: S (with Sealant), Push lock: A (Push-lock)

Body Size: 2 (1/8, 14), Type: 2 (Elbow), Control Type: 0 (Meter-out), Model: 1FSG, Thread: N (NPT), Port Size: 01 (1/8), Width Across Flats: 9 mm (or None: Sizes 2/3/4), Applicable Tubing: 01 (ø1/8"), Seal: S (with Sealant)

Number of Ports: 3 Port, Piping Direct., Plunger Length: 1 (Side Ported, Short), Body Option: U (w/Bottom Mounting Thread), Port Size: F01 (G 1/8, Side Ported Only), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller), Indicator: None

Number of Ports: 3 Port, Piping Direct., Plunger Length: 1 (Side Ported, Short), Body Option: Side Mounting, Port Size: N01 (NPT 1/8, Side Ported Only), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller), Indicator: None

Number of Ports: 2 Port, Piping Direct., Plunger Length: 3 (Bottom Ported, Short), Body Option: Side Mounting, Port Size: M5 (M5 x 0.8, Bottom Ported Only), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller), Indicator: None

Number of Ports: 3 Port, Piping Direct., Plunger Length: 3 (Bottom Ported, Short), Body Option: Side Mounting, Port Size: M5 (M5 x 0.8, Bottom Ported Only), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller), Indicator: None

Number of Ports: 3 Port, Piping Direct., Plunger Length: 1 (Side Ported, Short), Body Option: Side Mounting, Port Size: F01 (G 1/8, Side Ported Only), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller), Indicator: None

Number of Ports: 2 Port, Body Option: Side Mounting, Port Size: F02 (G 1/4), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller)

Number of Ports: 3 Port, Body Option: U (w/Bottom Mouinting Thread), Port Size: 02 (R 1/4), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller)

Number of Ports: 2 Port, Body Option: Side Mounting, Port Size: 02 (R 1/4), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller)

Number of Ports: 3 Port, Body Option: Side Mounting, Port Size: N02 (NPT 1/4), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller)

Number of Ports: 3 Port, Body Option: Side Mounting, Port Size: 02 (R 1/4), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller)

Number of Ports: 2 Port, Body Option: Side Mounting, Port Size: N02 (NPT 1/4), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller)

Number of Ports: 3 Port, Body Option: Side Mounting, Port Size: F02 (G 1/4), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller)

Number of Ports: 3 Port, Body Option: U (w/Bottom Mouinting Thread), Port Size: N02 (NPT 1/4), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller)

Number of Ports: 2 Port, Body Option: U (w/Bottom Mouinting Thread), Port Size: N02 (NPT 1/4), Actuator Type: 01 (Roller Lever), Suffix: S (Hard Steel Roller)