The board, subject to limitations imposed by law, shall fix the compensation of all appointed county officers, and the number and compensation of all deputies, assistants, clerks and other persons whose compensation is paid out of the county treasury, and of all court criers, tipstaves and other court employes, and of all officers, clerks, stenographers and employes appointed by the judges of any court and who are paid from the county treasury.
16 P.S. § 4823