Adjustments | Non User Adjustments - 17 | |
| readings, verify the |
|
| readings with a | |
| light meter or photometer. | |
| Also check the age of the R77 | |
| light meter by its | |
| manufacturing date stamp | |
| (such as 0398 for March | |
| 1998). |
|
| Caution: Dropping the | |
| meter can permanently | |
| damage its accuracy. A | |
| ||
| read incorrectly or its | |
| pointer may not drop to | |
| zero. | |
