How to avoid a drifting of the hand-wheel?
Spring balance system is not calibrated: Set the hand-wheel to the 3 o’clock position and let it sit. If the wheel drifts upward or downward then the spring system is not balanced and requires adjustment. If the hand-wheel does not drift, then no adjustment is necessary. If adjustment is necessary, the user can balance the unit by adjusting a flathead screw, which is accessible through the hole on the underside of the microtome base plate. Removal of the section waste tray is necessary. If the specimen head slightly rises, turn the screw counter-clockwise completing 2 or 3 full rotations.