POOIM

• Production era - 1940-1951

Note: from 1935-1939 a similar vertical magnifier was fixed to the Ploot reflex housing

• Code names - POOIM + PROON = PLOOT
• Type - Detached vertical 5 x flared eyepiece with swing-in 30 x magnifier for Ploot mirror reflex housing and later for Visoflex I
• Source
  • Dennis Laney's Leica Accessory Guide (1st edition) page 46 courtesy of Mike Butkus