+
-
Mechanical log
Brass with enamel dial.
Consists of a cylindrical body 1.7" (4.3cm) diameter; a tapered nose cone with a brass ring at its poited end to which a towing line can be secured, a stabilising fin secured to the body abaft the centre and a rotating section fitted with four fins.
Registering mechanism is set into the main body of the instrument and consists of three pointers which are driven through spur-gearing operated by a pinion on the end of the rotator shaft. Distance is indicated by the three pointers on an enamel plate: graduated every 10 miles from 0-100; every mile from 1-10; every 1/4 mile from 1/4 -1.
Consists of a cylindrical body 1.7" (4.3cm) diameter; a tapered nose cone with a brass ring at its poited end to which a towing line can be secured, a stabilising fin secured to the body abaft the centre and a rotating section fitted with four fins.
Registering mechanism is set into the main body of the instrument and consists of three pointers which are driven through spur-gearing operated by a pinion on the end of the rotator shaft. Distance is indicated by the three pointers on an enamel plate: graduated every 10 miles from 0-100; every mile from 1-10; every 1/4 mile from 1/4 -1.
For more information about using images from our Collection, please contact RMG Images.
Object Details
| ID: | NAV0753 |
|---|---|
| Type: | Mechanical log |
| Display location: | Not on display |
| Creator: | Thomas Walker & Son Ltd |
| Date made: | circa 1861 |
| Credit: | National Maritime Museum, Greenwich, London |
| Measurements: | 150 mm x 540 mm x 120 mm |