Late Victorian Tipping Bucket Recording Rain Gauge by Callaghan & Co of London Callaghan & Co Adie himself developed a number

Adie himself developed a number of instruments during his lifetime including the first coincidence rangefinder used in astronomy

to hold or release the movement

the Beagle went under water twice

William’s first son

What is interesting however

Late Victorian Tipping Bucket Recording Rain Gauge by Callaghan & Co of London Callaghan & Co Adie himself developed a numberFor sale, a late Victorian tipping bucket recording rain gauge by Callaghan & Co of 23a New bond Street, London. Comprised of a black painted two part zinc case with a graduated base and graduated lift off cover with central hole and siphon to receive rainfall and deliver it to an internal tipping bucket mechanism. An unusually pristine opaline glass dial measures an inch of rainfall around the outer circumference, with a secondary centre dial