POOIM

• Production era - 1940-1951
• Code names - POOIM + PROON = Ploot
• Type - Detachable, vertical 5 x flared eyepiece with swing-in 30 x magnifier for Ploot mirror reflex housing

Note: from 1935-1939, a similar vertical eyepiece and magnifier was fixed to early Ploot reflex housings, with a combined height 8 mm higher than the detachable POOIM + PROON combination.

• Source
  • Dennis Laney's Leica Accessory Guide (1st edition) page 46 courtesy of Mike Butkus