- Subject
- Calculation
- Item type
- Object
- Object type
- Sector
- Dimensions
- Height: 162mm Width: 36mm Depth: 2mm
- Inventory No
- 42676
Description
Ivory 6 inch sector with brass hinge fittings. Typical English pattern with sine and two tangent sectoral scales on one side, and a double logarithmic scale of numbers and sine and tangent single scales. The reverse has lines, chords and secant sectoral scales and inches, inclination of the meridian, chords, latitude and hours as single scales. The outer edge is a decimal foot.
