TOPCON LENSMETER LM-8 instruction manual. It introduces the usage of the product, precautions, etc.
This manual introduces the Topcon LM-8 Lensmeter, covering safety precautions such as using the instrument in normal temperature and humidity, placing it on a stable table, avoiding direct sunlight, and keeping the lens clean. It also explains the warning icons and displays that help prevent injury and equipment damage.
The guide details measurement preparations, step‑by‑step procedures for spherical, astigmatic, framed, contact, and prismatic lenses, as well as optional accessories and specifications. Maintenance tips, check items, and service information are included to ensure reliable operation.
| Peak refractive power range | 0 to +25 D |
|---|---|
| Minimum reading (peak) | 0.125 D |
| Prism refractive power range | 0 to 6 A |
| Power supply | 3 V (2 × UM1 cells) or 6 V AC adapter |
| Dimensions (H × W × D) | 310 mm × 160 mm × 420 mm |
It can be powered by two UM1 dry cells (3 V) or a 6‑V AC adapter.
The peak refractive power range is 0 to +25 diopters, with a minimum reading of 0.125 D.
The lamp automatically turns off after 5 minutes to save cell power.
Use it in normal temperature and humidity, place it on a level stable table, avoid direct sunlight, keep the lens clean, and apply the dust cover when not in use.