Roman timekeeping. The Roman clock, or time of day, was divided into 24 hours (Latin horae), 12 hours of light and 12 hours of darkness.
When equipping a home-gym, itâs critical to consider at least one piece of cardio equipment. The top four treadmill picks from Consumer Search range from $990 to $3,500, with the average costing around $2,000.Another piece of popular cardio equipment is an elliptical trainer, which averages $1,500.he top four treadmill picks from Consumer Search range from $990 to $3,500, with the average costing around $2,000. Another piece of popular cardio equipment is an elliptical trainer, which averages $1,500.
1 The average cost of dumbbell sets, which usually include weight discs, handles and racks, is $85 to $500 for a 50-pound range or less.2  For lightweight lifters, IronCompany.com sells six vinyl-covered cast iron dumbbells in 3-, 5- and 8-pound sets for $85. The average cost of dumbbell sets, which usually include weight discs, handles and racks, is $85 to $500 for a 50-pound range or less.