The main body is supported by a rear swivel castor (11), the rear castor having a negatively- raked swivel axis which is offset from the wheel axis of the castor to provide a positive castor trail.

An improved wheel assembly comprises a caster fork (12), a caster wheel (14) rotatably supported by the caster fork, and a caster swivel post (16) defining an axis about which the caster fork rotates.

Each wheel (12) is pivotable on a vertical axis.

This caster body is constituted by a first caster body (2A) and a second caster body (2B) divided in the center in the axis direction thereof.

The main body is supported by a rear swivel castor (11), the rear castor having a negatively- raked swivel axis which is offset from the wheel axis of the castor to provide a positive castor trail.

Each wheel 12,13 is rotatably mounted to the wheel support 20 in any suitable manner such as by an axle 16,17 or the like.

Each caster includes a bracket, a block, and a central shaft.

The wheel axle (23, 43) of each wheel assembly (21, 41) is offset from a vertical axis of the wheel assembly.

The measurement device is mounted on and secured to axis bolt (3) with the roller (2).

The actuating power for the front brake pass through a spindle supporting the front caster wheel.

A wheeled container having an axle and a first wheel connected to the axle and container having a bottom portion.

The secondary wheel or wheels may be positioned to remain within a sweep volume of the primary wheel as the caster assembly swivels around a caster swivel axis (28).

The at least one driven gear is operatively connected to a bur disposed in the first portion to rotatably drive the bur about a third axis of rotation.

The tip dimpler includes a recess having a dimpling wheel rotatably mounted on a first axis.

The roller box includes a cardboard box portion, a pair of fixed- axis wheels, and a handle.