Magnetic Base Stand Total Station Survey Mini Prism Constant 17.5mm
|Silver And Black
|Prism Angular Accuracy
|All Total Station
|High-speed Track And Railway
Total Station Survey Mini Prism,
Constant 17.5mm Survey Mini Prism,
45mm Ball Survey Mini Prism
Total Station Survey Measuring Mini Ball Prism Magnetic Base Stand Prism Constant 17.5mm
1. Reflector for Fixed Installations/Anti vandal prism
2. Housing: Material: 45Steel;
3. Ball Diameter: 45 mm.
4. Prism diameter: 25.4mm.
5. Air path corner cube in black spherical housing.
6. Applied for- Precision measurements- Automatic measurements.
7. Apply to high-speed track and trail.
8. Come with magnetic base as stand
9. Polished stainless steel
|Silver and Black
|Prism Angular Accuracy
|High-speed track and railway
One year warranty is provided.
Survey Prism Offsets
Retro-reflectors (or corner cube prisms) used with electronic distance measuring (EDM) instruments have an offset because the transmitted light beam from the EDM takes longer to enter and exit the prism. This longer time translates to a longer distance measured. This distance is corrected by using an 'offset' and positioning the prism in relationship to the plumb line of the prism holder. The offset is determined by multiplying the height of the prism by the refractive index of the glass used. Common offsets are 0, -17.5 mm, -30 mm, -34 mm, and -40 mm.
A nodal offset on a surveying prism is defined by the relationship of the prism holder and prism that places the optical center of the prism on the plumb line of the holder. This offset is the most advantageous at close range work when the apex or center of the prism is used as a pointing target for vertical and horizontal angle measurement. Every surveying prism has a nodal offset. Surveying Prisms and holders that are not in the nodal position however, can cause angular errors when using the prism apex as a target if it is not perfectly pointed toward the measuring instrument.
For high accuracy surveying it is recommended to use a round prism instead of a 360o prism if you are using a robotic total station. A Nodal Point prism should be used for high accuracy traversing and layout work.
Small quantity items will be packed in cartons and shipped by express or air.
For large quantity sea shipment would be the best choice.
Each item will be packed with individual inner packing. All items will be packed with outer paper box. For large quantity pallet will be equipped for better shipment.
Return Policy Details:
A. Buyers can return items for a refund within 7 days from the day the items were received, and the buyer is to afford the return shipping cost. The items must be returned in same exact condition as once it was delivered.
B. Buyers may return the items for a refund if they are not as described or with quality issues within 7 days from the items were received. The buyer is required to afford the return shipping cost, based on the condition of the items received.