Stop Clock
Product Code : SCL-PLE-11780
The JLab India Mechanical Stop Clock is a high-durability temporal measurement instrument engineered for the empirical study of rate-dependent physical phenomena. Optimized for Secondary and University-level laboratories, this clock provides a large-format, high-visibility analog interface for timing experiments without the distraction or battery dependency of digital devices. It facilitates the quantification of velocity, oscillation periods, and chemical reaction rates within institutional environments.
Technical Specifications
| Tender Specification | OEM Technical Detail |
| Drive Mechanism | Precision spring-wound mechanical movement (no batteries required) |
| Display Interface | Dual-dial analog (Large 60s outer dial / Small 30min inner dial) |
| Least Count | 1s (Standard) or 0.1s (High-precision variants) |
| Control Interface | Top-mounted Start/Stop and Reset buttons |
| Chassis Construction | High-impact ABS polymer or powder-coated metallic housing |
| Stability Features | Wide-base design with non-slip feet for single-handed operation |
| Visibility | High-contrast black markings on a white dial face |
Certification | ISO certificates available on request |
| HS Code | 9106.90.00 (Time of day recording apparatus) |
Key Pedagogical Outcomes (Bloom’s Taxonomy Alignment)
- Temporal Interface: Facilitates student visualization of the passage of time in relation to physical motion, supporting Mechanics and Kinematics Module 101.
- Rate Quantification: Enables the physical study of frequency and period, allowing learners to apply timing data to determine the period (T) of a simple pendulum or the flow rate of a liquid.
- Experimental Error Analysis: Supports the analysis of human reaction time; students can evaluate the difference between single-event timing and the "averaging" method (timing 20 oscillations) to reduce uncertainty.
- Coordination Evaluation: Allows students to evaluate the synchronization of physical observation with mechanical recording, a fundamental skill in traditional laboratory practice.
International Logistics & Compliance
JLab India ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade seaworthy crating (ISPM-15 compliant) featuring high-density foam molding to protect the delicate escapement and balance wheel from vibrational shock during transit.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and a guide on "Mechanical Timing Maintenance."
- Durability: Tropicalized design featuring corrosion-resistant internal springs, ensuring the clock remains accurate and the movement remains "free" in high-humidity climates.
Direct OEM Sourcing Advantages
Procuring the JLab India Stop Clock directly ensures vertical manufacturing control:
- In-House Escapement Calibration: Every clock is batch-tested against an atomic master reference to ensure time-keeping accuracy over a 30-minute duration.
- Tactile Reliability Control: Direct oversight of the button-return springs ensures a crisp "click" feedback, essential for students to time events precisely at the moment of observation.
- Direct Factory Spares Availability: Guaranteed availability of replacement glass/crystal covers, knobs, and internal mainsprings to maximize long-term laboratory ROI.
- Manufacturing Control: Direct oversight of the dial-printing process ensures that graduations are perfectly aligned with the hand movements, eliminating parallax-induced reading errors.
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