Description

Introduction SOKKIA 0-30 mm Offset Big Prism

The SOKKIA 0-30 mm Offset big Prism for Total Station stands as one of the most trusted reflector solutions in the professional surveying industry. Total station instruments require a high-quality prism to reflect the electromagnetic distance measurement (EDM) signal back to the instrument with minimal deviation, and the precision of that reflection directly determines the accuracy of every distance and coordinate measurement the instrument records.

This SOKKIA 0-30 mm Offset Red Prism Full Set serves surveyors across Bangladesh who work on road alignment, cadastral surveys, building construction layout, river crossing surveys, earthwork volumetric calculations, and infrastructure design. The 0-30 mm offset configuration makes this prism exceptionally versatile: surveyors set the offset to 0 mm when they mount the prism directly on a tribrach over a known point, and they switch to 30 mm when they use a standard prism pole where the physical tip sits 30 mm below the prism optical center.

Specifications SOKKIA 0-30 mm Offset Big Prism

Parameter	Specification
Brand	SOKKIA (Topcon Group)
Model / Set Name	0-30 mm Offset Big Prism Full Set
Prism Type	Circular glass retroreflector prism
Prism Offset	0 mm and 30 mm (switchable)
Prism Constant	0 mm / –30 mm (instrument-dependent)
Prism Diameter	Approx. 62 mm circular aperture
Prism Glass Material	Optical-grade borosilicate glass
Reflective Coating	Factory-applied multi-layer reflective coating
Frame Colour	Red anodised aluminium
Tribrach Mount Thread	International standard 5/8″ × 11 TPI
Instrument Compatibility	SOKKIA SET / CX / iX / SX series; Leica, Topcon, Nikon (standard circular prism mount)
Target Plate	Reflective circular target included
Carrying Case	Hard-shell padded case with foam insert
Kit Contents	Prism with holder, tribrach adapter, mini pole, target plate, carrying case, hex key
Operating Temperature	–20°C to +50°C
Storage Temperature	–30°C to +70°C
Surface Finish	Anodised aluminium body, corrosion resistant
Weight (complete set)	Approx. 0.8–1.2 kg (with case)
Standard Reference	Compatible with ISO 17123-5 total station measurement standards
Warranty	Manufacturer warranty — contact ASTZ for details

 

Key Features Sokkia Dual Offset Monitoring Prism

1. 0-30 mm Switchable Offset Prism — Accommodates both direct tribrach-mounted setups (0 mm) and standard pole-mounted field surveys (30 mm) without requiring a separate prism for each configuration.
2. Precision Circular Glass Prism Element — Optical-grade glass with factory-coated reflective surfaces delivers accurate EDM signal return, maintaining total station measurement accuracy to sub-millimeter levels.
3. High-Visibility Red Anodised Prism Frame — The distinctive red circular frame provides excellent target visibility for the instrument operator across long distances and in bright sunlight or overcast conditions.
4. SOKKIA-Compatible Tribrach Adapter Mount — The integrated tribrach mount fits all SOKKIA total station tribrach bases directly and suits most other brands that use the international standard tribrach thread size.
5. Telescoping Mini Prism Pole Included — The adjustable mini pole extends the prism for offset stakeout and inaccessible-point surveys while keeping the full set compact for transport.
6. Prism Target / Reflective Target Plate — The set includes a target plate that assists the instrument operator in precise aiming and collimation, especially on long sights.
7. Padded Hard-Shell Carrying Case — Protects the prism, adapter, pole, and accessories during transport on construction sites and field surveys where rough handling is common.
8. Broad Total Station Compatibility — Works with SOKKIA SET, CX, iX, and SX series total stations, and also pairs with Leica, Topcon, Nikon, South, and Hi-Target instruments that accept standard circular prisms.
9. Durable Anodised Metal Construction — The prism holder and frame resist corrosion, impact, and UV degradation in Bangladesh’s humid tropical field conditions.
10. Complete Kit — No additional purchases are necessary; one order from ASTZ delivers every component needed for full-function reflector operation with a total station.

 

Applications Sokkia tilting prism 0/30mm

1. Topographic Surveying: Land surface data collection for contour mapping, digital terrain model (DTM) generation, and site feasibility studies.
2. Road & Highway Alignment: Traverse control surveys, horizontal and vertical alignment stakeout, and cross-section measurement for RHD and LGED road projects.
3. Construction Layout & Setting Out: Building corner pegging, column grid stakeout, pile location marking, and as-built verification on construction sites.
4. Cadastral & Boundary Surveys: Property boundary demarcation, land parcel measurement, and coordinate data collection for land records departments and RAJUK.
5. Bridge & Culvert Engineering: Control point establishment, span measurement, and structural component positioning during bridge construction and inspection.
6. Earthwork & Volume Calculation: Cross-section surveys for cut-and-fill volume computation on embankment, dam, and road projects.
7. River & Coastal Surveys: Hydrographic control surveys, riverbank delineation, and floodplain mapping along Bangladesh’s river systems.
8. Railway Track Surveys: Track alignment control, turnout stakeout, and permanent way positioning for Bangladesh Railway projects.
9. Utility & Pipeline Surveys: Underground utility mapping, pipeline route surveys, and service corridor alignment for water, gas, and power infrastructure.
10. Academic Field Training: Surveying coursework and field practice for civil engineering, geomatics, and architecture students at BUET, CUET, and polytechnic institutes.

 

Who Uses This Sokkia Surveying Prism Offset 0 -30 

1. Licensed Survey Firms
2. Road & Highway Dept (RHD / LGED)
3. Civil Engineering Consultancies
4. Government Mapping Agencies (SOB, DAM)
5. Real Estate Developers & RAJUK
6. Universities & Engineering Colleges (BUET, CUET, RUET)
7. Bangladesh Army & Military Engineering
8. Water Resources & Flood Control (BWDB)
9. Environmental & Geotechnical Consultancies
10. Independent Surveyors & Freelance Engineers

Frequently Asked Questions (FAQ)

Q1. What does the 0-30 mm offset mean on this SOKKIA prism set?

The offset refers to the difference between the physical centre of the prism glass and the vertical axis of the instrument or pole it mounts on. At 0 mm offset, the prism optical centre aligns directly with the tribrach vertical axis.

Q2. Which total station brands work with this prism set?

This SOKKIA red prism set is fully compatible with all SOKKIA total station series including SET, CX, iX, and SX models. It also works with Topcon, Leica, Nikon, Trimble, South, Hi-Target, and other total stations that accept standard circular prisms with a 5/8-inch tribrach mount thread.Sokkia Tilting Prism 0/30mm,

Q4. How do I set the prism constant in my total station?

Access the instrument settings menu on your total station and navigate to the prism constant or reflector offset section. Enter 0.000 m when using the 0 mm offset configuration (prism directly on tribrach over point). The ASTZ technical team can guide you through this setup for SOKKIA instruments.

Q6. Can I use this red prism with a robotic total station in tracking mode?

Yes. The precision optical glass and reflective coating on this SOKKIA red prism support standard EDM and tracking mode operation. However, robotic total stations with automatic target recognition (ATR) perform best with manufacturer-matched active prisms or 360-degree prisms designed specifically for ATR tracking.

Q10. Can this prism set measure at long distances?

Yes. Standard circular glass prisms like this SOKKIA red prism reflect EDM signals effectively over distances that vary by total station model and atmospheric conditions. Most modern total stations achieve single-prism ranges of 2,000 m to 5,000 m in clear conditions.

Why Buy from ASTZ Bangladesh Sokkia APS Series big prism 

  

1. Genuine SOKKIA Instrument Guarantee–ASTZ sources authentic SOKKIA and compatible precision survey instruments from verified distributors. Every red prism set ships with genuine accessories — no counterfeit components.
2. Nationwide Delivery to All Districts–ASTZ delivers to Dhaka, Chittagong, Sylhet, Rajshahi, Khulna, Barisal, Comilla, Mymensingh, Rangpur, and all district towns through reliable courier and freight partners.
3. Expert Surveying Equipment Support–The ASTZ technical team assists with prism offset configuration, compatibility questions, and instrument-specific setup guidance before and after every purchase — in Bangla and English.
4. Competitive & Transparent Pricing–ASTZ offers fair market pricing with no hidden fees. Institutional quotations, bulk discounts, and government purchase order processing are all available on request.
5. Secure Packaging for Precision Optics– Prism sets ship in protective foam-lined outer packaging inside the original hard case, so the optical glass surface arrives undamaged regardless of courier handling.
6. Trusted by Survey Professionals–Survey firms, RHD project teams, BUET survey labs, and independent licensed surveyors across Bangladesh rely on ASTZ as their preferred instrument supplier.