An hourglass (or sand-glass, sand timer, sand watch, or sand clock) that moves, re-accommodates and rotates a dial is a hack of both, a clock dial and an hourglass. Hack does not equal electronics.

Xuhal Wedding Unity Sand Ceremony Set Empty Hourglass Fillable Unity Sand Ceremony Kit Decorative DIY Sand Timer 4 Tubes Colored Sand and Funnel for Desk Home Office Decor, 8.25 x 3.25 Inches ...

Not quite as DIY-looking as the other digital hourglass, this Digital Timer combines computing technology with century old stylings to make for one dorky looking desk gadget. It has a 100 minute ...

The Hourglass timer with bright sand makes learning time fun! The perfect timer for teeth cleaning, studying, show and tell, yoga, gym time, and time out. View Product.

If you insist on joining the LED parade but don't carry a purse or work in a coal mine, there's still hope. The inaccurately named "Electric Sand Timer" can be used in place of the traditional ...

Depending into which chamber the sand is poured, the same amount of sand can count one, two or three minutes. The hourglasses are not the first time-keeping devices designed by Nendo.