Rock
Aggregate
Cement
Concrete
Soil
Steel
Bitumen/Asphalt
Security Survey Equipment
General Items
SHAPE INDEX CALIPER AZA0974
The AZA0974 Shape Index Caliper is a precision hand-held measuring instrument designed to evaluate the shape index of coarse aggregates by measuring their flakiness and elongation values. It is an essential tool in construction material testing, helping laboratories and site engineers ensure that aggregates meet dimensional and performance standards as per IS 2386 (Part I).
Key Features
-
Evaluates shape index of coarse aggregates
-
Measures both flakiness and elongation characteristics
-
Durable stainless steel / hardened steel construction
-
Precision engraved measuring scale
-
Ergonomic, easy-to-handle manual design
-
Suitable for laboratory and on-site field use
-
Fully compliant with IS 2386 (Part I)
Description
Importance of Shape Index Testing
The shape index determines whether aggregate particles fall within acceptable geometric limits. Excessively flaky or elongated particles can:
-
Reduce packing density
-
Increase voids
-
Decrease compaction quality
-
Lower strength and durability of concrete and asphalt
By using AZA0974, engineers can quickly verify aggregate quality before use in structural and pavement works.
Working Principle
The AZA0974 operates through a dual-arm caliper mechanism with an engraved scale:
-
Measures the least dimension to evaluate flakiness (when thickness < 0.6 × mean size)
-
Measures the largest dimension to evaluate elongation (when length > 1.8 × mean size)
It requires no power, no complex calibration, and delivers instant results.
Applications
-
Road and highway construction projects
-
Bridge and infrastructure works
-
Concrete and asphalt mix design laboratories
-
Aggregate manufacturing and crushing plants
-
Academic and research institutions
Technical Specifications
| Parameter | Specification |
|---|---|
| Model No. | AZA0974 |
| Material | Stainless steel / Hardened alloy steel |
| Measurement Range | 0 – 200 mm (typical) |
| Least Count | 1 mm or 0.5 mm (model dependent) |
| Compatible Aggregate Sizes | 6.3 mm to 63 mm |
| Operation | Manual |
| Scale Type | Engraved steel scale |
| Standards | IS 2386 (Part I), ASTM D4791 (Reference) |
FAQ
Q1: What is the AZA0974 Shape Index Caliper used for?
It is used to measure the flakiness and elongation indexes of coarse aggregate particles.
Q2: Is this tool standardized?
Yes, it complies with IS 2386 (Part I) for aggregate shape testing.
Q3: Does it need calibration?
No calibration is normally required, but periodic inspection is recommended for accuracy.
Q4: Can it be used on site?
Yes, it is lightweight, portable, and suitable for both lab and field conditions.
Q5: What is the measurement range?
It typically measures up to 200 mm with a least count of 1 mm or 0.5 mm
Additional information
| Material |
Stainless steel / hardened alloy |
|---|---|
| Measurement Range |
0 – 200 mm (typical) |
| Least Count |
1 mm or 0.5 mm (depending on model) |
| Compatible Aggregate |
6.3 mm to 63 mm nominal sizes |
You may also like…
Advanced Triaxial Test System (UU–CU–CD Capable) (AZA 1296)
- UU–CU–CD test modes for complete soil strength profiling
- Automated control of pressure, load, and drainage
- Compatible with clay, silt, sand, and mixed soils
- Integrated data acquisition and real-time graphing
- Meets ASTM D2850, D4767, BS1377, AASHTO standards
- Ideal for geotechnical, research, and academic use
Air Bag Trainer AZA1246
The AZA1246 AZALAB Air Bag Trainer is a comprehensive educational training platform designed to demonstrate the structure, operation, diagnostics, and fault analysis of modern automotive airbag systems, also known as Supplemental Restraint Systems (SRS). Built using OEM automotive components, this trainer delivers a realistic learning experience while maintaining complete operational safety.
This system is ideally suited for automotive engineering colleges, ITIs, polytechnic institutes, vocational training centers, and service technician programs, enabling both theoretical instruction and hands-on diagnostics practice.
Alternator Trainer AZA1247
The AZA1247 AZALAB Alternator Trainer is a hands-on automotive electrical training system designed to demonstrate the working principles, construction, and diagnostics of an automotive alternator with external voltage regulation. Built using OEM automotive components, this trainer provides a realistic and safe learning platform for students, technicians, and trainees to understand vehicle charging systems in depth.
This system is ideal for automotive engineering institutes, ITIs, polytechnics, vocational training centers, and service technician programs, supporting both theoretical instruction and practical experimentation.
Arc Welding Machine AZA1234
The AZA1234 Arc Welding Machine by A Z A Lab is a high-performance industrial welding solution engineered for demanding fabrication, maintenance, and structural welding applications. Designed using advanced inverter technology, this machine delivers superior arc stability, high efficiency, and reliable welding performance across a wide range of electrode types and materials.
With an inverter frequency of up to 20 kHz, the AZA1234 ensures fast dynamic response, reduced spatter, and excellent weld bead appearance. Its robust electrical design supports a high duty cycle, allowing continuous operation under heavy loads while maintaining consistent welding output—even with output cable lengths of up to 100 meters.
AutoDist‑86 Glass Distillation AZA1282
AutoDist-86 Glass Distillation Unit – AZA1282
The AutoDist-86 Glass Distillation Unit (Model: AZA1282) from AZA Lab is a high-performance laboratory water distiller engineered for the consistent production of ultra-pure distilled water. Manufactured entirely from high-grade borosilicate 3.3 glass, this unit delivers exceptional chemical resistance, thermal stability, and long-term durability, making it ideal for scientific, medical, pharmaceutical, and academic laboratories.
Designed for reliability and purity, the AZA1282 ensures contamination-free distillation without the risk of metallic ion leaching common in metal-bodied stills.
AutoFlash – Automated Abel Flash Point Analyzer AZA1277
The AutoFlash-1277 (Model: AZA1277) from AZA Lab is a fully automated, microcontroller-based Abel Flash Point Analyzer designed for accurate, safe, and repeatable determination of flash points of combustible liquids. Engineered to meet stringent international testing requirements, this advanced instrument conforms to IP 170, ISO 13736, and IS 1448 (Part 20) standards.
Covering a standard temperature range of –30°C to 70°C, extendable up to 110°C, the AZA1277 is ideally suited for laboratories involved in petroleum testing, petrochemical quality control, fuels research, and regulatory compliance.
Related products
ACCELERATED POLISHING MACHINE AZA0984
Key Features
- Tests polished stone value (PSV) of road aggregates
- Conforms to ASTM D3319 and BS 812 Part 114
- Heavy-duty rotating disc with abrasive feed system
- Integrated water spray system to simulate wet road conditions
- Powder-coated steel body for corrosion resistance
DENSITY BASKET AZA0978
Key Features
- Used for specific gravity and water absorption tests
- Made from high-quality stainless steel mesh
- Equipped with a strong welded suspension hook
- Corrosion-resistant, rust-free and long-lasting
- Smooth welded edges to prevent sample damage
- Standardized mesh aperture for proper water flow
DEVEL ATTRITION TESTER AZA0989
Key Applications
- Road and highway material testing
- Railway ballast quality assessment
- Concrete mix design durability testing
- Civil engineering research & academic laboratories
DIGITAL LOS ANGLES ABRASION TESTING MACHINE AZA0987
Key Functions
- Determines aggregate abrasion resistance under controlled test conditions
- Simulates real-life impact and wear suffered by aggregates
- Provides precise digital RPM and time control for repeatability
- Suitable for routine quality control and research laboratories
LOS ANGELES ABRASION TESTING MACHINE AZA0986
Key Functions
- Tests abrasion resistance of coarse aggregates
- Evaluates impact strength under repeated load cycles
- Ensures material suitability for roads, highways, and structural concrete
- Provides accurate, repeatable test results for quality control
Reid Vapor Pressure Tester AZA1321
- Floor-Standing Design with stainless-steel working table for strength and easy operation
- Digital Temperature Controller for precise and uniform water bath heating
- Dual High-Accuracy Pressure Gauges for reliable internal pressure readings
- Dual Vapor Bombs for simultaneous testing and increased productivity
- Rugged Construction for long-term laboratory and industrial use
RIFFLE SAMPLE DIVIDER AZA0980A
Key Features
- Used for precise sample splitting of fine & coarse aggregates
- Uniform chute spacing for even material distribution
- Heavy-duty powder-coated steel body
- Supplied with two high-capacity collection pans
- Smooth-flow chute design to minimize material loss
- Simple, manual operation – no power required
