Harpoon Sounding Machine with Lead – T. Walker, ca. 1875
Walker’s brass depth log with two dials, one reading 0 to 30 fathoms and the other from 0 to 150 fathoms. The rotor is free to rotate as the log is lowered, but when the line is drawn up again a locking piece drops down and holds it in place. Stamped with anchor mark and signed T. Walker’s Patent and number 343. The lead has a piece of rope to be attatched at the sounding machine. On the lid of the original pine case remains of instructions. To the top of the lid a brass retailers plaque of H. Hughes, 59 Fenchurg Street, London.
Date: 1850 – 1880
HWL case: 10,5×27,5×10,5 cm (4.1x11x4.1 in)
DW machine: 11×24 cm (4.2×9.5 in)
L lead: 18 cm (7 in)
Signed: T. Walker’s Patent 343
Condition: in good and working condition, wear consistent with age and use