A tape cassette is provided which is so constructed that a plurality of weighting members are fittedly held in fitting apertures or recesses of a casing formed at corners of the casing in a detachable manner while being exposed at part thereof on {HEAD ~ a surface} of {TAIL ~ the casing} 
A tape cassette is provided which is so constructed that a plurality of weighting members are fittedly held in fitting apertures or recesses of a casing formed at corners of the casing in a detachable manner while being exposed at part thereof on { HEAD ~ a surface } of { TAIL ~ the casing }
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