Stop Clock
Product Code : SCL-PLE-11780
The StemAids 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. Manufactured to ISO 9001:2015 standards, it facilitates the quantification of velocity, oscillation periods, and chemical reaction rates within institutional environments.
Technical Specifications
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Tender Specification |
OEM Technical Detail |
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Drive Mechanism |
Precision spring-wound mechanical movement (no batteries required) |
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Display Interface |
Dual-dial analog (Large 60s outer dial / Small 30min inner dial) |
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Least Count |
1s (Standard) or 0.1s (High-precision variants) |
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Control Interface |
Top-mounted Start/Stop and Reset buttons |
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Chassis Construction |
High-impact ABS polymer or powder-coated metallic housing |
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Stability Features |
Wide-base design with non-slip feet for single-handed operation |
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Visibility |
High-contrast black markings on a white dial face |
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ISO Compliance Code |
Manufactured under ISO 9001:2015 Quality Management Systems |
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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
StemAids 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 StemAids 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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