Weight

It's controversial, but slogging passengers with a body-weight surcharge is still on the table for many airlines, be it for profit or the environment. But it seems attitudes, particularly among younger travelers, is shifting on the contentious issue.

While cable machines do allow users to perform many weight training exercises, the devices can cost up to several thousand dollars. The $75 Hyperbell Cable system, however, reportedly lets you do those same exercises using your existing dumbbells.

If someone is serious about weightlifting, they'll typically buy a set of dumbbells, a barbell, and weight plates for the barbell. The new Dualbell system, however, allows existing dumbbells to take the place of the plates, saving space and money.

When you're working out with dumbbells, stopping to add or remove weights can disrupt the whole flow of things. In order to keep those stops as short as possible, NordicTrack has introduced its voice-controlled iSelect Adjustable Dumbbells.

If you're a serious weightlifter, then you know how important it is to maintain proper form. Calibrex is designed to help, as it uses ultrasound to detect if the barbell isn't being lifted symmetrically – it also tracks the user's performance stats.

If you're a gym junkie – and there are plenty out there – having a wristband or glove capable of accurately tracking your session is invaluable. The latest take on workout tracking from PureCarbon promises live rep counting and weight tracking, thanks to sensors embedded in the palm of a glove.

Soldiers often have to carry over 100 lb (45 kg) of gear in a backpack, for several hours at a time. That’s why engineers at the Australia’s Department of Defence have developed a new exoskeleton, that diverts two thirds of pack weight directly to the ground.

WaterWeight is a sandbag alternative designed to help stabilize a camera tripod or lighting stand. Because the donut-shaped bag only needs to be filled with water when you're using it, it can be carried to shoots in its empty light-weight form.

In a blow for asymmetry, Disney Research Zurich and ETH Zurich have developed a computer algorithm that can take any shape, no matter how cock-eyed, and make it spin like a top.

The quest for ever-greater fuel efficiency is driving auto manufacturers to extreme lengths to reduce the weight of their vehicles. In its search for "enlightenment," Audi has announced it will introduce glass fiber-reinforced polymer (GFRP) springs in its vehicles before the end of the year.

International automotive supplier Continental is working on technology that would enable tires to detect a vehicle’s weight.

The Maxim 2 in 1 Jug and Scales measures both volume and weight in the same container.