Tenbroeck Tissue Grinder

. All-glass construction
. Popular style which affords the choice of hand or motor operation
. Pestle is tooled for an appropriately sized single hole rubber stopper (not supplied)
. By inserting a short metal rod through the stopper into the motor chuck, these grinders can be motor driven at slow speeds
. Replacement components are available and completely interchangeable
. Clearance between pestles and tubes is 0.004 to 0.006 in.