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An hourglass is the simplest instrument for counting time intervals, consisting of two transparent vessels connected by a narrow neck, one of which is partially filled with sand.
The time during which the sand is poured through the neck into another vessel can be from several seconds to several hours.
Type - hourglass.
Measurement time - 3 minutes.
An hourglass is the simplest instrument for counting time intervals, consisting of two transparent vessels connected by a narrow neck, one of which is partially filled with sand.
The time during which the sand is poured through the neck into another vessel can be from several seconds to several hours.
Type - hourglass.
Measurement time - 3 minutes.
Settlement: Cash, Non-cash (with or without VAT), cash on delivery |
Settlement: Cash, Non-cash (with or without VAT), cash on delivery |