Standard bearing sight with two vanes for use on the gauge compass. The box is assembled with dove tail connections. Provenance Datema, Delfzijl Netherlands.

Catalogue: NM.6-03
Date: ca. 1930-1950
HWL case: 7.5×22.5×26 cm
Signed: not signed
Origin: unknown
Condition: good with signs of wear; case in very good condition