Sears offers the Craftsman Digital Timing Light, model no. 87701, for $74.99 with free shipping. That's $125 off list and the lowest total price we could find. This tool allows users to view and adjust base timing and overall ignition advance on 2- and 4-cycle ignition systems.
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase and may be eligible for additional credits and discounts.