| Model | Description |
| 2000-0 | Differential pressure gage, range 0-0.50" w.c., minor divisions .01, calibrated for vertical scale position. |
| 2000-00 | Differential pressure gage, range 0-0.25" w.c., minor divisions .005, calibrated for vertical scale position. |
| 2000-00N | Differential pressure gage, range .05-0-.2" w.c., minor divisions .005, calibrated for vertical scale position. |
| 2001 | Differential pressure gage, range 0-1.0" w.c., minor divisions .02. |
| 2002 | Differential pressure gage, range 0-2.0" w.c., minor divisions .05. |
| 2003 | Differential pressure gage, range 0-3.0" w.c., minor divisions .10. |
| 2004 | Differential pressure gage, range 0-4.0" w.c., minor divisions .10. |
| 2005 | Differential pressure gage, range 0-5.0" w.c., minor divisions .10. |
| 2006 | Differential pressure gage, range 0-6.0" w.c., minor divisions .20. |
| 2008 | Differential pressure gage, range 0-8.0" w.c., minor divisions .20. |
| 2010 | Differential pressure gage, range 0-10" w.c., minor divisions .20. |
| 2015 | Differential pressure gage, range 0-15" w.c., minor divisions .50. |
| 2020 | Differential pressure gage, range 0-20" w.c., minor divisions .50. |
| 2025 | Differential pressure gage, range 0-25" w.c., minor divisions .50. |
| 2030 | Differential pressure gage, range 0-30" w.c., minor divisions 1.0. |
| 2040 | Differential pressure gage, range 0-40" w.c., minor divisions 1.0. |
| 2050 | Differential pressure gage, range 0-50" w.c., minor divisions 1.0. |
| 2060 | Differential pressure gage, range 0-60" w.c., minor divisions 2.0. |
| 2080 | Differential pressure gage, range 0-80" w.c., minor divisions 2.0. |
| 2100 | Differential pressure gage, range 0-100" w.c., minor divisions 2.0. |
| 2150 | Differential pressure gage, range 0-150" w.c., minor divisions 5.0. |
