Surveying Instrument Collection
Maker |
Hewlett-Packard, Loveland, USA |
Model |
Prism Adapter HP 11425A |
Serial Number |
none |
Dimensions |
73 mm diameter, 51 mm high |
Image |
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Description |
The prism adapter ('swivel base') is shown on the left in the above figure. The HP 11425A prism adapter ('prism interface base') allows to fit accessories (such as reflectors) with 5/8 inch centring threads to the heavy duty HP 11426A tribrach used for the HP 3820A electronic tacheometer. The top of the prism adapter rotates about the vertical axis with friction coupling. The collection holds three prism adapters labelled A, B, C.
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History & comments |
See brochure HP "Civil Engineering Products" (Part No. 5952-9153) for details. |
Conservation |
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Condition |
Lightly corroded aluminium parts. |
Remarks |
A: engraved P.C. 44732, marked Made in USA B: engraved '2' (only) C: engraved P.C. 44732, marked Made in USA |
Dates |
Catalogued in 2007 by JMR. Photo by JMR. |