Surveying Instrument Collection
Maker |
OMNI Optical Products Inc., USA |
Model |
OMNI JR 25.4 Prism Assembly |
Serial Number |
--- |
Dimensions |
57 x 42 x 122 mm |
Image |
|
Description |
This small prism (25.4 mm diameter aperture) is designed for short range applications. In its metal yoke, it can be handheld or mounted on a reflector pole (5/8 inch thread). The orange metal yoke carries a spot bubble. If the prism is mounted on the U-shaped plastic holder, it can be attached to the string of a plumb-bob. In both cases, the prism can be mounted in a '30 mm (prism) offset' or a 'zero mm (prism) offset' position. The prism can also be used 'free hand' without any attachment. The various user options are explained in the above diagrams. The equipment comes with a canvas pouch (16 x 12 x 7 cm) and with and instruction sheet. |
History & comments |
. |
Conservation |
in canvas pouch (120 x 160 x 70 mm) |
Condition |
good |
Remarks |
Donated by Bill Rein, Surveyor, Balgowlah NSW, April 2012 |
Dates |
Catalogued by J. M. Rüeger on 15.6.2015. Photos by J. M. Rüeger. |