You should have your dial gauge on your pressure canner checked annually for accuracy. The University of Maine Cooperative Extension provides free Pressure Dial Gauge Testing. Call or e-mail the contact person for your county, listed below, to get your dial gauge tested.
| County | Contact person | Phone (toll free in Maine) | |
| Androscoggin | Kathy Savoie | ksavoie@maine.edu | 1-800-287-1458 |
| Aroostook (Northern/Fort Kent) | Lisa Fishman | lisa.fishman@maine.edu | 1-800-287-1421 |
| Aroostook (Central/Presque Isle) | Lisa Fishman | lisa.fishman@maine.edu | 1-800-287-1421 |
| Aroostook (Southern/Houlton) | Lisa Fishman | lisa.fishman@maine.edu | 1-800-287-1421 |
| Cumberland | Kathy Savoie | ksavoie@maine.edu | 1-800-287-1471 |
| Franklin | David Fuller | dfuller@maine.edu | 1-800-287-1478 |
| Hancock | Sue Baez | sue.baez@maine.edu | 1-800-287-1479 |
| Kennebec | Crystal Hamilton | crystal.hamilton@maine.edu | 1-800-287-1481 |
| Knox | Nadine Reimer | nadine.reimer@maine.edu | 1-800-244-2104 |
| Lincoln | Nadine Reimer | nadine.reimer@maine.edu | 1-800-244-2104 |
| Oxford | Karen Toohey | karen.toohey@maine.edu | 1-800-287-1482 |
| Penobscot | Jason Bolton | jason.bolton@maine.edu | 1-800-287-0274 |
| Piscataquis | Jane Conroy | jconroy@maine.edu | 1-800-287-1491 |
| Sagadahoc | Kathy Savoie | ksavoie@maine.edu | 1-800-287-1458 |
| Somerset | Crystal Hamilton | crystal.hamilton@maine.edu | 1-800-287-1481 |
| Waldo | Sonia Antunes | sonia.antunes@maine.edu | 1-800-287-1426 |
| Washington | Alan Majka | alan.majka@maine.edu | 1-800-287-1542 |
| York | Gere Stevens Nancy Beaulieu |
gere.stevens@maine.edu nancy.beaulieu@maine.edu |
1-800-287-1535 |
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