The tassel consists of a multitude of threads (well over 300 of them), and all of these have a built-in desire to fray at the lower end. To prevent this, each thread must be fitted with a knot. This knot should be tied in figure of eight, not like a normal overhand knot. Providing the tassel with knots is a task normally performed by the technologist's partner. This is because the usual price is one kiss per knot. In the absence of a partner, a looser acquaintance who accepts the payment is used.

To find a partner among his fellow chalmerists, the two balls can be consulted. Their position indicates the marital status of the technologist. The whole thing is quite simple: If the chalmerist has a partner, the balls are placed close together in the middle of the tassel. If the chalmer is engaged, they are placed close together but at the top. If one is married, the balls are placed together at the bottom. In cases where a reptile is missing, the balls are placed so that they divide the tassel into equal thirds.

There are variations in the tradition as regards the balls, but these variations are not supported by the Marshal's Office.

What distinguishes the sophisticated chalmerist from barbarian KTHers and others is that certain etiquette is applied in carrying. Hats, for example, are never worn indoors, except for ceremonial attire. Emilia, on the other hand, may wear a cap indoors if she so wishes. Buses and cars are also considered indoors, but not trams, for historical reasons.

• The hat consists of a cap and tassel. The tassel has two wooden balls (note that the new tassels do not have wooden balls but only small thread balls ).

• Each year a Mayflower is purchased. This is placed in one of the two balls on the tassel.

• The hat should not be decorated with anything other than the applications explicitly mentioned in these rules.

• The cap may be worn by members of the Chalmers Student Union, with the intention of graduating. The cap may also be worn by graduates of Chalmers on more festive occasions.

• The cap is not worn indoors. Emilia may, when deemed appropriate, wear the cap indoors.

• A white cap is worn from the graduation ceremony on 30 April until the graduation ceremony on 1 October. A black cap is worn from the time of the mouse tracking on 1 October until the time of the mouse tracking on 30 April.

• Nymphs have the right to put on a cap from the moment they change from being a Nollan to a nymph.

• At graduation parties, white caps may be worn even before the end of April, but only during the party itself, and not on the way to or from it.

• A white cap is worn with ceremonial dress. The cap may be worn indoors.

• At funerals, white caps without appliqués are worn with mourning ribbons. Mourning ribbons are worn so that the cockade is hidden.