Popular comparisons
| Body Diameter | 40 mm (actual slightly more than 41 mm) |
| Fitting | 1/8 BSP |
| Pressure Scale | 0 to 16 |
| Mounting | External rim |
| Color | White, Black, Gold |
| Pattern | Solid |
Isomac Water Pressure gauge with Rim for External Mounting Reads grouphead water pressure; 0-16 scale, 1/8 BSP fitting. This is considered a 40mm body diameter gauge; in reality, it varies from a little less to a little more than 41mm. Fits: Amica Brio
The catalog often lists the same model at several merchants — worth a price check before you buy.