Note: The leg spread on this particualr gauge is very wide and spans almost from cam gear to cam gear. However, the gauge still performs accurately. I personally think that the narrower base gauges are better, because they are easier to use. Just my opinion.
Timing Belt Gauge - Cummins ST-1138: 5.085" from Leg to Leg
Timing Belt Gauge (Squeeze) - Cummins ST-1138 (Borroughs)
Timing Belt Gauge Face - Cummins ST-1138 (Borroughs)