Construction rules for a Kanabo/Tetsubo

Ok...after some looking around, I have found the following (from the Marshals Handbooks, SCA and Midrealm)

A. General
1. NO METAL OR UNAPPROVED RIGID PLASTIC MAY BE USED IN THE STRIKING SURFACE OR SURFACES OF ANY WEAPON.
2. Primary weapons used single-handed shall have a wrist strap (or equivalent restraint) which will keep the weapon from leaving the immediate area of the user. Restraints are not required on hafted weapons used single-handed, or on single-handed back-up weapons.
3. Flails are expressly prohibited.
4. Mechanical devices known as "sliders," which are used to guide or propel spears, are prohibited.
5. All weapons shall have all cutting edges and thrusting tips marked in a contrasting color.
6. The striking surfaces of all weapons, including the tip, shall be wrapped in a manner that allows no rattan splinters to protrude.
7. All thrusting tips and striking heads must be securely attached to the weapon.
8. The edges and tips of all striking surfaces shall be rounded.
9. No part of a weapon shall have sharp edges or protrusions with cross-section of less than 1¼ inch (31.8mm) in diameter. Guards, pommels, hooks, etc., shall be firmly and securely affixed to the weapon haft.
10. It shall not be possible to force any part of a weapon which may reasonably be expected to contact an opponent during combat more than 1/2 inch (12.7 mm) into a legal face guard. Rattan weapons may have a handle section which is less than 1 1/4 inch (31.8 mm), so long as it meets this criterion. Combat archery shafts may be thinner as long as the head and tail meet the criteria.
11. Rattan shall not be treated in any way that will substantially reduce its flexibility (e.g., treated with wax, resin, fiberglass, etc.).
12. No weapon shall exceed 6 lbs (2.73 kg).
13. No missile weapons intended to simulate firearms, slings, slingstaffs, nor Atlatl's can be used on the field of Armored Combat.

C. Two-Handed Weapons. Weapons which may be used with one or two hands shall have the following requirements:
1. Weapons shall be constructed of rattan of not less than 1 1/4 inch (31.8 mm) in diameter (including tape). Polearms may contain blades constructed of split rattan, so long as the piece(s) are securely fastened to the haft.
2. The weapon shall not be excessively flexible.
3. If the weapon has a head, it shall not be constructed of solely rigid materials. The head shall be firmly and securely attached to the haft. The head shall allow at least 1⁄2 inch (12.7 mm) of progressive give between the striking surface and the weapon haft. Laminated or split rattan construction techniques do not require 1⁄2 inch (12.7 mm) of progressive give, so long as their construction imparts striking characteristics similar to an unpadded weapon constructed of a single piece of rattan.
4. No weapon may have a cutting and/or smashing surface at both ends.
5. When thrusting tips are used, they shall be no less than 2 inches (50.8 mm) in diameter/cross-section and have 2 inches (50.8 mm) of resilient material in front of the rigid tip of the weapon, thereby providing progressively resistant give.
6. Weapons exceeding 7 1⁄2 feet (2.286 m) shall not be used for cutting or smashing and shall be used for thrusting only.
7. Total weapon length shall not exceed 12 feet (3.658 m).

MIDDLE KINGDOM ADDITIONS TO SOCIETY WEAPON STANDARDS
A. PROHIBITED WEAPONS
1. Thrusting shields and Punch Daggers are prohibited in the Lists of the Middle Kingdom.
2. Axe heads are prohibited on weapons over 72 inches in the Lists of the Middle Kingdom.

B. MASS WEAPONS INCLUDE MACES, AXES, AND WAR HAMMERS.
1. Padding: Mass weapons must be padded with at least ½ inch of flexible closed-cell foam, or its
equivalent, along any striking surface. EXCEPTION #1: Pre-molded "Rathbone" or other similarly
approved axe heads do not require padding along the striking surface. EXCEPTION #2: 7.5 foot
polearms may be unpadded.
2. Clicker mace and axe
Clicker mace and axe striking surfaces may use split rattan, heater hose, or strips of rubber or leather as
clickers. A minimum of ½ inch of closed cell foam must separate the haft rattan and the clicker. The
clicker must start at least 1 inch below the head of the weapon, and stop 1 inch above the bottom of the
head, and constructed such that the edges of the piece of clicker cannot come in contact with the
opponent being struck. A clicker must be 1¼ inches wide, with a minimum space of 1 inch between
clickers. A clicker must not extend more than ½ inch into a legal faceplate opening.
3. All maces are strictly single-handed weapons. Under no circumstances may any sort of clicker be
introduced into a two handed weapons.
4. A single-handed mass weapon may not exceed 48 inches in length. Any mass weapon longer than 48
inches is considered to be a polearm and covered by those standards.

C. POLEARM AND GREAT AXES
1. BUTT SPIKES: To employ a butt spike the user must be authorized in polearm. Butt spikes may only
be used on weapons over 48 inches.
2. The use of padded and unpadded striking surfaces are not permitted on the same weapon.
3. A Great Axe may be up to 72 inches in length.
4. Polearms over 6 feet must be unpadded.

Stupid question, so now that I admitted it, no making fun of me. What's a clicker?

So the reason for the clicker is to let the opponent know he's been hit with sufficient force?