AJKANT Frictional Weight Box
High-Precision Physics Laboratory Calibration Weights | Professional Class M1 Standard
The AJKANT Frictional Weight Box (1g to 200g) is a fundamental educational and analytical laboratory apparatus manufactured at our state-of-the-art facility in Ambala, India. Specifically engineered for physics and mechanical science laboratories, this set features premium chromium-plated brass weights and precision aluminum foil fractional weights.
Designed to meet international educational specifications (including Cambridge, WAEC, and KCSE boards), it is the gold standard for friction coefficient experiments, force table measurements, and manual balance calibration. Every weight is carefully calibrated to Class M1 standards, ensuring exceptional reliability for educational institutions, laboratory distributors, and global science tenders.
Key Product Features
✨ Premium Chromium Plating
Weights are individually lacquer-polished and chromium-plated. This process prevents oxidation and maintains calibration standards in tropical climates.
🌳 Polished Hardwood Case
Housed in a seasoned wood box with a secure metal latch, preventing loss and protecting the weights from environmental elements.
💙 Velvet-Lined Cushioning
Features individual slots for each weight lined with soft velvet. The inner lid is padded with foam to secure weights during transit.
⚖️ Class M1 Precision
Weights conform to OIML Class M1 tolerance limits, making them suitable for accurate high-school and university lab experiments.
📐 Complete Analytical Range
Includes gram weights from 1g to 100g, fractional milligram weights in a separate aluminum box, and a wire rider.
🛠️ Anti-Contamination Forceps
Comes with non-magnetic metal forceps to handle weights. Prevents finger oils and moisture from affecting mass values.
Technical Specifications
| Specification | Details |
|---|---|
| Product Range | 1 gram to 200 grams |
| Material (Gram Weights) | High-grade brass, polished and chromium-plated |
| Material (Fractional Weights) | Precision-cut pure aluminum foil |
| Accuracy Class | OIML M1 Calibration Standard |
| Case Construction | Teak wood cabinet with blue velvet slots and lid cushion |
| Included Accessories | 1x Forceps (Tweezers), 1x 10mg Wire Rider, Aluminum Case for Milligrams |
| Quality Calibration | ISO 9001:2015 certified production |
| Country of Origin | India (Scientific Instrument Hub, Ambala) |
Set Composition & Contents
The 1g to 200g frictional weight box contains the following standard calibration components:
| Weight Value | Quantity | Material / Type | Class M1 Tolerance |
|---|---|---|---|
| 100 g | 1 | Chromium-plated Brass | ± 5.0 mg |
| 50 g | 1 | Chromium-plated Brass | ± 3.0 mg |
| 20 g | 2 | Chromium-plated Brass | ± 2.0 mg |
| 10 g | 1 | Chromium-plated Brass | ± 1.6 mg |
| 5 g | 1 | Chromium-plated Brass | ± 1.2 mg |
| 2 g | 2 | Chromium-plated Brass | ± 1.0 mg |
| 1 g | 1 | Chromium-plated Brass | ± 0.8 mg |
| Fractionals (1mg to 500mg) | 1 Set | Aluminum Foil | Separate circular container | ± 0.2 mg to ± 0.5 mg |
| Forceps (Tweezers) | 1 | Nickel-plated steel | N/A |
| Wire Rider (10mg) | 1 | Aluminum / Nickel-Silver wire | ± 0.2 mg |
Laboratory Applications
- Friction Coefficient Testing: Ideal for experiments using friction boards, inclined planes, and sliding wooden blocks. It provides precise increment loads to calculate static and kinetic coefficients of friction (μs and μk).
- Physical Equal-Arm Balances: Serves as the primary reference mass standard for triple beam balances and mechanical physical balances used in educational practicals.
- Calibrating Springs & Force Sensors: Used to calibrate spring scales, force sensors, and Hooke's Law apparatus in physics demonstrations.
- General Science & STEM Education: Helps students understand the principles of mass, gravity, balance calibration, and density measurements.
Frequently Asked Questions (FAQs)
Q: What is the significance of the "Frictional" label in the AJKANT Frictional Weight Box?
A: In educational environments, these kits are frequently referred to as Frictional Weight Boxes because their primary application is providing standard masses for friction-board experiments. However, it is fundamentally a standard high-precision physical weight box. It provides calibrated, known masses to calculate gravitational forces (F = mg) and friction coefficients precisely.
Q: Why are there duplicate 20g and 2g weights in the box?
A: The set uses the standard OIML 1-2-2-5 mass configuration (e.g. 1g, 2g, 2g, 5g, 10g, 20g, 20g, 50g, 100g). This mathematical arrangement allows you to create any integer mass from 1 gram up to 210 grams with the minimum number of physical weights. For example, to weigh 40g, you use the two 20g weights; for 70g, you use a 50g and a 20g weight.
Q: How does the OIML Class M1 tolerance standard apply to these weights?
A: The Class M1 tolerance determines the maximum permissible error for each weight. For instance, the 100g weight has a tolerance of ± 5.0 mg, the 50g has ± 3.0 mg, and the 10g weight has ± 1.6 mg. This level of precision is ideal for educational laboratories, physics labs, and commercial weighing calibration.
Q: How should these weights be maintained to preserve their calibration?
A: To maintain calibration, weights should always be handled using the provided forceps. Touching weights with bare fingers transfers oils and moisture, which attract dust and cause subtle oxidation, gradually increasing the weight's mass. Always store them in their dedicated slots inside the velvet-lined box and keep the lid closed.
Q: Can AJKANT Overseas customize weight box contents for bulk contracts?
A: Yes. As a leading manufacturer from Ambala, India, we can customize the sets (e.g. 1g to 500g, 1g to 1000g, or custom Newton force weights) for educational bids, government tenders, and laboratory catalog distributors. We offer customized laser engraving, OEM branding, and reinforced wooden crates for bulk export.
Payment terms: LC, TT, DA/DP.
Export Inquiries: +91-8901691014 | ajkantoverseas@gmail.com
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