The Dip Circle Simple Standard, also known as a magnetic dip needle or inclinometer, is one of the most foundational instruments in the study of terrestrial magnetism. It measures the angle of dip — the angle that the Earth's magnetic field makes with the horizontal plane at a given geographic location. For physics laboratories in schools, colleges, and university departments worldwide, a precision-grade dip circle is non-negotiable for accurate geomagnetic experiments and curriculum demonstrations.
At AJKANT Overseas, we manufacture and export the Dip Circle Simple Standard from our precision machining facility in Ambala, Haryana — India's foremost scientific instruments manufacturing cluster. This guide is intended for institutional procurement officers, laboratory distributors, and science equipment importers who need reliable technical benchmarks and export specifications before placing a bulk order.
What Is a Dip Circle? Understanding the Instrument
A dip circle (also called an inclinometer or magnetic dip compass) is a scientific instrument used in physics and geophysics to measure the angle of magnetic inclination — the vertical angle between the horizon and the Earth's magnetic field lines. Unlike a standard compass that measures horizontal bearing, a dip circle measures the vertical component of the Earth's magnetic field (Bv).
The instrument consists of a magnetic needle pivoted at its centre of gravity and mounted inside a graduated circular scale. When the instrument is oriented correctly with respect to the magnetic meridian, the needle aligns with the resultant Earth's magnetic field, and the angle it subtends with the horizontal is the angle of dip for that location.
Core Physics Principles Involved
- Horizontal Component (Bₕ) — The component of Earth's magnetic field parallel to the Earth's surface
- Vertical Component (Bᵥ) — The component perpendicular to the Earth's surface, pointing downward in the northern hemisphere
- Angle of Dip (δ) — Defined by: tan(δ) = Bᵥ / Bₕ
- Resultant Field (B) — The total magnetic field strength: B = √(Bₕ² + Bᵥ²)
Technical Specifications — AJKANT Dip Circle Simple Standard
Our Dip Circle Simple Standard is built to deliver accurate, consistent results across thousands of measurement cycles. Below are the complete technical parameters for procurement reference:
Standard Accessories Included
- Magnetised dip needle (mounted in instrument)
- Carrying case / protective box
- Instruction manual for standard physics experiments
- Re-magnetisation guidelines
Key Laboratory Applications & Curriculum Uses
The Dip Circle Simple Standard is a compulsory instrument in multiple international physics curricula. Here are its primary use cases in educational and research settings:
1. Measuring the Angle of Dip (Magnetic Inclination)
The primary experiment: place the instrument in the magnetic meridian, allow the needle to settle, and read the dip angle directly from the graduated scale. This experiment appears in CBSE Class 12 physics, ICSE Senior Secondary, and A-Level Physics (Cambridge CAIE) syllabuses.
2. Calculating Earth's Magnetic Field Components
Using a known horizontal component (measured via a magnetometer or compass), students calculate the vertical component and total field strength using: B = Bₕ / cos(δ). This is a standard laboratory exercise in university geophysics and applied physics courses.
3. Geographical Variation Studies
The dip circle is used in fieldwork to map magnetic dip variations across different geographic locations. Geology and earth science departments use it alongside Deflection Magnetometers to characterise local magnetic field anomalies.
4. Compass Navigation and Orienteering Training
Demonstrating why magnetic compasses need to be adjusted for local dip is an important lesson for geography and navigation curricula. The dip circle makes this principle tangible and measurable.
Competitor Analysis: AJKANT vs. Generic Market Importers
When procuring dip circles for institutional bulk orders, quality variance between manufacturers can significantly affect experiment accuracy and instrument longevity. Here is a comprehensive comparison:
| Comparison Parameter | AJKANT Dip Circle (Standard) | Generic Imported Units |
|---|---|---|
| Scale Accuracy | ✔ ±0.5° with vernier scale | ✘ Often ±2–3° due to poor graduation |
| Needle Magnetisation | ✔ Hardened steel; retains magnetism for years | ✘ Mild steel; loses magnetism in 6–12 months |
| Pivot Bearing | ✔ Jewelled-agate low-friction pivot | ✘ Brass point pivot; high friction, inaccurate readings |
| Levelling System | ✔ 3-screw adjustable base + spirit level | ✘ Fixed base; no levelling — skews dip readings |
| Body Material | ✔ Lacquered brass — corrosion resistant | ✘ Chrome-plated mild steel; rusts in humid environments |
| Pivot Lifting Mechanism | ✔ Yes — protects needle during storage and transport | ✘ Absent; needle pivot wears rapidly with movement |
| Calibration Traceability | ✔ NABL-accredited lab testing | ✘ No certification; individual unit variance uncontrolled |
| Export Compliance | ✔ CE-compatible; meets ASTM E18 tolerances | ✘ No stated standards compliance |
| Bulk Pricing & MOQ | ✔ MOQ: 10 units; custom packaging available | ✘ High MOQ or inconsistent lead times |
| Warranty | ✔ 12-month manufacturing defect warranty | ✘ No warranty or after-sales support |
🎯 Complete Your Magnetism Lab Setup
The Dip Circle is one instrument in a complete terrestrial magnetism laboratory kit. AJKANT manufactures the entire suite — procure your complete setup in a single B2B order:
- Dip Circle Deluxe — Enhanced precision model with vernier scale for advanced university labs
- Dip Circle Simple Form — Economy entry-level model for secondary school demonstrations
- Dip Needle — Standalone dip needle for fieldwork and portable measurements
- Deflection Magnetometer — Measures horizontal component of Earth's field; used alongside the dip circle
- Deflection Compass — For directional field studies and basic magnetic field mapping
- Bar Magnet — Re-magnetise or demonstrate polarity and field lines
- Bar Magnet (Alnico Type) — Superior field retention; ideal for precision magnetism experiments
- Earth Inductor — For EMF induction experiments using Earth's magnetic field
- Oersted Apparatus — Demonstrates magnetic effect of electric current (Oersted's experiment)
- Solenoid — For electromagnetic field studies and Ampere's law demonstrations
Export & B2B Procurement Information
AJKANT Overseas has been supplying precision magnetism laboratory instruments to institutional buyers across 25+ countries. Our export-ready packaging and documentation support makes bulk procurement seamless for international buyers.
Countries We Export Dip Circles To
Our dip circles are regularly shipped to educational institutions, ministry tender contracts, and laboratory distributors in: Nigeria, Kenya, Ghana, Tanzania, UAE, Saudi Arabia, Qatar, Oman, Philippines, Nepal, Bangladesh, Sri Lanka, Myanmar, Vietnam, South Africa, Ethiopia, Uganda, and more.
Bulk Order Process
- Submit Enquiry — Share your quantity, target delivery date, and destination port via our Export Enquiry Form
- Receive Proforma Invoice — We issue a PI within 24 hours with FOB/CIF pricing
- Order Confirmation — 30–50% advance payment via T/T or LC
- Production & QC — 10–15 working days manufacturing and NABL quality check
- Shipment — Sea freight (LCL/FCL) or air freight; full documentation (commercial invoice, packing list, COO, MSDS) provided
Why Source Your Dip Circle from AJKANT Overseas?
- 🏭 Direct Manufacturer — No middlemen; factory-direct pricing with minimum markup
- 📐 Precision Engineering — CNC-machined components with tight tolerances
- 🌍 Global Export Experience — 25+ countries; understanding of customs, HS codes, and port protocols
- 📦 Custom OEM Packaging — Brand labelling with your distributor logo on request
- 🔬 Full Magnetism Lab Supplier — One-stop source for all magnetism experiments; saves procurement effort
- 📋 Tender Compliance — Experience with government and ministry STEM lab tenders across Africa, Middle East, and Asia
Frequently Asked Questions (FAQ)
The Dip Circle Simple Standard uses a basic vernierless graduation for reading the dip angle, making it suited for standard secondary school and college experiments where ±1° accuracy is sufficient. The Dip Circle Deluxe features a vernier scale for sub-degree readings (±0.5°) and is recommended for undergraduate and post-graduate university physics labs. For NSS, CBSE Board practicals, the Simple Standard is the specified instrument. For research departments and advanced labs, choose the Deluxe.
The dip needle is made from hardened steel for long-term field retention. However, if it weakens (typically after 3–5 years of regular use), it can be re-magnetised by stroking it 20–30 times in one direction with a strong bar magnet or an Alnico bar magnet such as our AJKANT Bar Magnet (Alnico Type). Always use the same pole consistently (e.g., always stroke with the North pole of the bar magnet), and stroke from centre to tip in one direction. After re-magnetisation, verify the dip reading corresponds with your known local dip angle reference.
The minimum order quantity for export is 10 units per model. For tender orders requiring 50+ units, we offer OEM-compatible packaging with institution or distributor branding. We can combine multiple magnetism instruments (dip circle, bar magnets, deflection magnetometer, etc.) into a single consolidated shipment to reduce per-unit freight costs. Contact our B2B Export Desk for a consolidated quotation for your complete physics lab magnetism kit requirement.
The Dip Circle (angle of dip measurement) experiment is prescribed in the following major curricula: CBSE Class 12 (Physics Practical — Earth's Magnetic Field), ICSE Senior Secondary, Cambridge CAIE A-Level Physics (Chapter: Electromagnetism & Fields), WAEC/NECO Senior Secondary Physics (West Africa), KCSE Physics (Kenya), and Australian VCE Physics Unit 3. For institutions following these curricula, the AJKANT Dip Circle Simple Standard meets all specified parameters.
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