An inertial balance is made of a spring on which you attach the object whose mass you're interested in.
Next season, though, it could be a Pop Phone, which you attach by an old-fashioned cord to your cellphone.
Selfie sticks, described by the online Collins dictionary as "an elongated stick to which you attach a camera or mobile phone to take a better photo", have been banned by venues including the National Gallery, the O2 arena and Tottenham Hotspur football club.
There are also a few extra items that come with the camera: little bumpers for the left side, which you attach with microscopic screws.
The Tend.ai system consists of a small computer, provided for free, that acts as a thin client, passing data to and from the robot and webcam, which you attach to its arm.
In case you weren't previously familiar with QuickPods, they're telescoping poles to which you attach your camera, to allow you to take a better picture of yourself than you could otherwise do just holding the camera at arm's reach.
There are two Transporter versions: a neo-modern tower, only 6-inches tall, that includes an internal hard drive, either 500 GB ($199), 1 TB ($249) or 2 TB ($349), or, a hockey puck-like version, the Transporter Sync ($99) to which you attach your own external hard drive.
Then they will give you a number, which you attach onto your costume.
You want the sacrificial anode to be big enough so that half of it is submerged and the other half — the half onto which you attach your positive terminal — is above water.
Some have two parts of which one part must be attached to each cord crimp, while others are just a simple clasp which you attach to one cord crimp and then fasten to a jump ring attached to the other cord crimp.
