Surveying Instrument Collection
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Maker |
Hilger & Watts Ltd. |
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Model |
N/A |
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Serial Number |
N/A |
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Dimensions |
Radius 35mm |
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Image |
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Description |
This Service Compass is a small pocket instrument typically used in the Army, and is a close relation to the Prismatic compass. It is also sometimes referred to as a Universal Pocket Transit (Brunton type). The front vane however, is replaced by a folding lid containing a mirrored disc, and a vertical line is etched on the mirror replacing the vertical wire in the ordinary vane. This mirror is also used to read the compass needle. There is a circular bubble fitted inside the compass. The compass features three graduations, a full 360 degree circle graduation, a 180 degree half-circle graduation for alignment and a smaller graduation used for slope angle measurement. It also features a handle that enables the tubular bubble inside the box to be centred (and the slope angle read).
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History & comments |
The Service compass is considered as a small pocket prismatic instrument typically used in the Army. |
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Conservation |
In a container |
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Condition |
Good condition, well maintained |
| Remarks |
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Dates |
Manufactured in 1900 (approx). Catalogued in 1997 |
