Antique Hydrometer DRING & FAGE LONDON / adjusted by Farrow & Jackson LTD London

Description

Antique Hydrometer DRING & FAGE LONDON. Condition is "Used". Shipped with USPS Priority Mail.
Missing 1 weight, the no. 10
All other weights are there.
I don't know if the Hydrometer WORKS or how it works
Please CHECK pics for THEY are PART OF the DESCRIPTION.
Box in fairly GOOD condition,  except it is missing the plaque.
There is a plaque by Farrow & Jackson LTD.
INSIDE of box has some slight issues.