Kelvin Hughes Mark 3 surveying sextant
Kelvin and Hughes Mark 3 surveying sextant
Product details: Kelvin Hughes Mark 3 surveying sextant | Kelvin Hughes | Quintant | Survey | Material: Aluminium
I now have four MkIII's in my collection; two are marked Hughes and Son, the other two are marked Kelvin and Hughes. The sextants all differ in small aspects from each other. The most intersting is that the clamps only seem to work on the sextant they are mounted on indicating that they were specifically cut for one sextant only.
The two Kelvin and Hughes sextants displayed here are almost identical to their Hughes and Son twins. They differ in the markings and logo and some very small details such as the handle. What is interesting is that in the four instruments the changes in the ownership of Hughes are displayed going from Hughes and Son to Kelvin Hughes (division of Smith and Sons) to Kelvin and Hughes.
KH Mk 3
Data sheet
- Year
- 65975: 1959 | HO455: 1964
- Serialnumber
- 65975
HO455: 69640 - Type of use
- Survey
- Material
- Aluminium
- graduation
- deg
- measuring range
- 145
- Radius limb in mm
- 150
- accuracy
- 1'
- fine reading
- drum micrometer
- image direction
- upright
- Size instrument (l x w x h) in m
- 0.23 x 0.30 x 0.14
- weight instrument in kg
- 1.1
- Size case (l x w x h) in m
- 0.30 x 0.34 x 0.17
- weight case & in kg
- 3.8
- country obtained from
- United Kingdom
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Kelvin and Hughes Mark 3 surveying sextant
Product details: Kelvin Hughes Mark 3 surveying sextant | Kelvin Hughes | Quintant | Survey | Material: Aluminium