You are viewing a LakeShore Rim Tach 8500 Series Dual Channel Digital Tachometer with two pickup heads: (1) 512PPR & (1) 1024 PPR (by Northstar). The frame says 5 to 15VDC.

This is a lightly used (tested good) tachometer frame with used pickups and encoder rotor. All parts are in great shape and ready to install with the mounting H/W. See the pictures to see what you get: frame, (2) pickup heads, (1) encoder rotor, mounting H/W set all in the original boxes.

This will be shipped to you as a FedEx Ground shipment in the USA at cost.