Horizontal
Deflection Factor = 1V/Division Vertical Deflection Factor = 5mA/Division 7.9DIV * 1V/DIV = 7.9V 7.3DIV * 5mA/DIV = 36.5mA Resistance = 7.9V/36.5mA Resistance = 216.4 Ohm Applied Peak Power hor.=9.7DIV and vert.=8.9DIV hor.=9.3V and vert.=44.5mA Peak Power = 414mW (note: use most top/bottom and right/left graticules for delta measurement only when CRT geometry is in accurate condition) 

Resistors can be measured by reading the deflection, they can't be measured with high precision. The curve tracer shows larger nonlinearities easily. It's also a powerful tool for checking NTC and PTC resistors and other temperature or power dependend devices. 