SubjectTelescopesItem typeObjectPhysical materialGlassCopper AlloyObject typeTelescopeInventory No21632DescriptionA copper alloy level for a transit instrument.Related ItemsMore related itemsLevel of Transit InstrumentInventory Number 91480Level of Transit Instrument, incompleteInventory Number 21727Level of Transit Instrument, incompleteInventory Number 22653Level for Transit InstrumentInventory Number 41653