![](https://coimages.sciencemuseumgroup.org.uk/299/621/large_thumbnail_1928_0801__0005_.jpg)
An achromatic magnifier with a 20mm crossed scale divided to 0.1mm
- Made:
- Birmingham
![An achromatic magnifier with a 20mm crossed scale divided to 0](https://coimages.sciencemuseumgroup.org.uk/308/5/medium_smg00023968.jpg)
An achromatic magnifier with a 20mm crossed scale divided to 0.1mm, in leather case. Japanese, c.1984
An achromatic magnifier with a 20mm crossed scale divided to 0.1mm, in leather case. Japanese, c.1984