Height Recorder Hohenschreiber (Barograph) Luftwaffe Italian It has as service label

It has as service label dated 1953

The second hand has a small bit of corrosion on its opposing end

just like you

See image of spec sheet

Height Recorder Hohenschreiber (Barograph) Luftwaffe Italian It has as service labelA Hohenschreiber is a height recording instrument that is essentially a barograph, i. e., it measures change in barometric pressure that is interpreted as altitude and recorded on a rotating chart drum. It is specified for measuring altitude up to 15 Km. This example was made by Gebr. Winter Jungingen Hohenz. The instrument contains a bellows for measuring change in altitude barometric pressure and a rotating strip chart recorder drum. As pressure