Thesaurus Term/Concept: SAND GLASS
Identifier | 95341 |
---|---|
Class | MDA OBJECT TYPE |
Status | Preferred |
Index? | Yes |
Scope Note | A reversible device for measuring time by the transfer of sand from upper to lower glass bulb. |
Identifier | 95341 |
---|---|
Class | MDA OBJECT TYPE |
Status | Preferred |
Index? | Yes |
Scope Note | A reversible device for measuring time by the transfer of sand from upper to lower glass bulb. |