M-406

Hydrostatic

Measuring Instrument

Hydrometer

Unidentified

Conical float topped by ball on stem. Float filled with small stones. Cone graduated 0-19 by halves. With turned wooden case; pressure fitting lid.

"EVF" on case

brass, wood

	Imperial(in)		Metric(cm)
Height			25.7
Width			6.7
Depth			6.7
Diameter
Circumference

	Imperial(in)		Metric(cm)
Height
Width
Depth
Diameter