Hello,
That is probably one of the most rarest U-Boot navigation instrument.
His name is : "Höhenrechenschieber HR 2"
Since I collect the U-Boot militaria, I have only ever observed two HR2, that may be examined in the German Naval U-Boat Archive at Murvick – Marine Schule, and the second in a US museum.
The instrument measures 17” x 7” approx. with a total extended length of approx. 27”, height 7” and comprises:
Black anodized alloy frame and base with KM I/D plate to front marked “Hohenrechenschieber HR 2 “ with Military code gwr for Dennert & Pape Hamburg,instrument serial Nr and KM property marking Eagle /Swastika/M.
Applied paper printed declination tables to front, alloy vernier knobs left and right marked “Feinstellung nach klemmung” bright plated clamping knobs to left and right hand side, these enable the verniers.
Curved Plexiglas viewing shield, further diagrams for guidance and notes.
Dual Concentric spiral scaled tubes, tube locking lever to left-hand end .
Michel
That is probably one of the most rarest U-Boot navigation instrument.
His name is : "Höhenrechenschieber HR 2"
Since I collect the U-Boot militaria, I have only ever observed two HR2, that may be examined in the German Naval U-Boat Archive at Murvick – Marine Schule, and the second in a US museum.
The instrument measures 17” x 7” approx. with a total extended length of approx. 27”, height 7” and comprises:
Black anodized alloy frame and base with KM I/D plate to front marked “Hohenrechenschieber HR 2 “ with Military code gwr for Dennert & Pape Hamburg,instrument serial Nr and KM property marking Eagle /Swastika/M.
Applied paper printed declination tables to front, alloy vernier knobs left and right marked “Feinstellung nach klemmung” bright plated clamping knobs to left and right hand side, these enable the verniers.
Curved Plexiglas viewing shield, further diagrams for guidance and notes.
Dual Concentric spiral scaled tubes, tube locking lever to left-hand end .
Michel
but I have again many dreams...
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