FOKOS

• Production era - 1933-1966
• Type - Horizontal mount short rangefinder to fit Standard Leica (model E); the short mount swivels to allow access of the shutter speed knob.
• Variants - Black & nickel, black & chrome or all chrome with 7.5 cm base; after 1949 - chrome only version with 6.2 cm base.
• HFOOK - Vertical mount with fixing clip and shoe for Leica I (model A), Compur Leica (model B) and Leica I (model C).
• Reference - Page 8 of Dennis Laney's Leica 1984 Accessory Guide courtesy of Mike Butkus