Surveying Instrument Collection
Maker |
Stanley London |
Model |
--- |
Serial Number |
n/a |
Dimensions |
32 mm diameter, 55 mm high |
Image |
|
Description |
This small (brass) double pentaprism ('optical square') has an upper 90 degree prism viewing the scene on the left and a lower 90 degree prism looking to the right. There are no windows for sights straight ahead, nor is there a hook for a plumb-bob. The handle is short (32 mm long) and thin (9 mm diameter). The prism are protected by a sleeve than can be rotated to cover the viewing windows. The upper part is painted in dark green The top surface carries a painted "UNI NS 9" label as well as two engraved '90°' and a 'STANLEY LONDON' marking. |
History & comments |
|
Conservation |
no box or container |
Condition |
some paint damage. Some paint removed to make the maker's label visible. |
Remarks |
. |
Dates |
Catalogued and photographed by JMR on 8 July 2015. |