A microscope stage includes a fixed stage, and a movable stage which is set slidably in contact with a predetermined plane of the fixed stage and which includes a surface having a large friction coefficient.

An exercise device and method of use thereof, including an exercise platform and an incline base that can be used together or separately. The exercise device can be used for aerobics, strength-training and yoga or a combination thereof. The exercise platform can be rectilinear U-shaped and can include pull rings and exercise tubes connected thereto and the incline base can be adjustable from a horizontal position to variable degrees of incline.

The invention is incorporated in an exercise device comprising three blocks: a "first block", a "second block" and a "third block". Each block has a horizontal platform (herein, "first horizontal plafform", a "second horizontal platform" and a "third horizontal platform") upon which the user can stand on and perform all types of exercise activity. It is preferred that three blocks are connected together by two hinges (herein, a "first hinge" and a "second hinge"). It is also preferred that the three block be of graduating heights. It is preferred that the first hinge be connected between the first block and a first vertical corner of the second block so that the first hinge rotates about an first axis that that is perpendicular to the plane formed by the first horizontal platform. It is also preferred that the second hinge be connected between the third block and the second vertical corner of the second block so that the second hinge rotates about a second axis that that is perpendicular to the plane formed by the second horizontal platform. In the preferred embodiment, the first vertical corner of the second block is diagonally opposite from the second vertical corner of the second block.

A step exercising system for an aerobic step workout is constructed as a portable inclined step ramp. The ramp is sloped towards a user such that the user can step up onto the ramp at various heights, thereby regulating the degree of intensity of the workout without having to suspend the workout to adjust the step height, as is the case when using a conventional aerobic step having a raised level platform.

A step-extending device is adapted for use in association with a walker to ascend or descend a stairway. The step-extending device may employ a first base and a second base, each of which is adapted to receive legs of a walker upon respective upper surfaces. The device may be used in connection with a frame that connects the first and second bases to each other. A cross member connects first and second bases. A frame includes one or more upright members with handles adapted for grasping and moving the step-extending device from one stair to another stair during use. The height of each of the first and second support bases is adjusted to approximate the height of stairs upon a stairway, so that stairs of essentially any height may be accommodated.