.35mm Mehcanical Pencil
Rotring
Purchased in 2021, used daily since. Initial cost of $34 (new, from Amazon). Replaced once, spent $20 on lead since purchase.
| Initial Cost | $34 |
| Total Cost | $88 |
| Purchased | Winter 2021 |
| Lifespan | 3 years (1326 days) |
| Cost / Use | 6.64¢ |
