产品介绍：
产品说明
一般描述
Mechanical benchtop counters are perfect for blood cells, bacterial colonies or other repetiitive counting.
特点和优势
- each key records up to 999
- total window keeps track of total number of strokes made on all other keys, bell rings when total reaches 100
- blood cell key labels
基本信息
| NACRES | NB.22 |
产品性质
| 长度 × 宽度 × 高度 | 12.5 × 3 × 2.2 in. |
