Mark V
A bathythermograph (BT) is a device for obtaining, from a ship under way, a record of temperature against depth and pressure in the upper 300 m of the ocean. For a thermal element it has a xylene-filled copper coil, which actuates a stylus through a Bourdon tube. The pressure element is a copper aneroid capsule that moves a smoked glass slide at right angles to the motion of the stylus. A double analog record is thus obtained as the BT is lowered and recovered. This device has generally been replaced by the expendable bathythermograph (XBT).
This object is a Mark V bathythermograph in a fitted box, made by S. G. Brown Ltd. There is a label with 'Dr Swallow' on top of the box.
This object is a Mark V bathythermograph in a fitted box, made by S. G. Brown Ltd. There is a label with 'Dr Swallow' on top of the box.
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Object Details
ID: | NAV1965 |
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Collection: | Oceanography |
Type: | Bathythermograph |
Display location: | Not on display |
Creator: | S. G. Brown Ltd |
Date made: | circa 1950 |
Credit: | Transferred from the Institute of Oceanographic Sciences, Deacon Laboratory |
Measurements: | Overall: 105 mm x 780 mm x 105 mm x 25 kg |
Parts: | Mark V |