Hourglass set TFA Dostmann model 18.6012.30, glass sand timers in multiple colours

This set of six glass hourglasses by TFA Dostmann provides a simple, visual way to measure short time intervals around the home, classroom or office. Each timer has a coloured silicone protective cap and fine glass sand that runs smoothly to indicate elapsed time. The compact, neutral design and visible printed numbers make the set useful for everyday tasks such as brushing teeth, baking, board games or timed school activities.

Advantages

The six-piece set covers a wide range of short durations so you can pick the appropriate timer for different activities. Silicone caps add stability and protect the glass, while the fine sand ensures even flow with a tolerance of up to ±10%. The transparent glass bodies and clear printed numbers make it easy to see remaining time at a glance.

Suitable for

• Timing teeth brushing or short bathroom routines
• Kitchen tasks such as baking or steeping
• Board games and timed play
• Classroom exercises and nursery activities to give children a visual sense of time
• Short work or study intervals and breaks

When it may not be suitable

This hourglass set is intended for short, informal timing tasks and is not designed for precise scientific measurements or long-duration timing beyond 30 minutes. Glass construction makes the timers delicate; they are not suitable for rough handling or environments where they may be knocked over frequently.

Key specifications

• Material: glass body with silicone protective caps
• Filling: fine glass sand
• Set size: 6 hourglasses in different colours
• Running times: 1 min (grey) / 3 min (natural) / 5 min (violet) / 10 min (blue) / 15 min (pink) / 30 min (green)
• Timing tolerance: approximately ±10%

How to use

Place the chosen hourglass on a stable, flat surface and invert it to start timing. Watch the sand flow from the top chamber to the bottom; the printed number indicates the intended duration. After the sand has finished running, return the hourglass to its original position to reset. Use the silicone caps for extra grip and to reduce the risk of slipping on smooth surfaces.

What to consider before purchase

• Intended use: suitable for short, informal timing but not for precision timing
• Fragility: glass construction requires careful handling
• Timing tolerance: allow for up to ±10% deviation from nominal times

Usage recommendations

Use the shorter timers for quick routines (1–5 minutes), the medium timers for common tasks such as brushing teeth or baking preparation (3–15 minutes), and the 30-minute timer for longer study or activity periods. Keep timers on a flat surface and avoid dropping or exposing them to strong impacts.