I have been involved in both scenarios. In one compnay, we (QC) supplied digital calipers at the inspection stations which were shared by all shifts. We also included a 1" gage for periodic calibration, and we taught the operators haw to check the calibration. Periodically, QC inspectors would also verify that the calipers were checked on the gage block. We had a dirty, dusty environment, and the slides would cake up every 6 months or so, and we would swap them out with a newly serviced one, and send the worn one out for servicing.(In batches of course). My current company requires employees to buy most of their own tools, either from the company (very steep markup!) or locally on thier own. Bigger tools are supplied by the company and must be signed for, with a pay deduction if lost, stolen or damaged.We conduct inventories quarterly to verify possesion and condition. A problem I have with this system is that I do not believe you can hold employees responsible for equipment issued to them if the equipement is: A> used by others as well as the signer , B.> you do not provide a secure storage location for the equipment , C. > you do not maintain the equipment