That'll work too ... if you have a PIC with the TMR1 gate option.
Code:
' PIC12F609 using Timer1 gate input to record pulse widths

@ __config _INTRC_OSC_NOCLKOUT & _WDT_OFF & _MCLRE_OFF & _IOSCFS_4MHZ & _CP_OFF

CMCON0 = 0         ' comparator disabled
CMCON1 = %00000010 ' TMR1 gate source is T1G pin
GPIO = 0           ' outputs all low at POR
TRISIO = %00010000 ' GPIO.4 = TMR1 gate input

PVAL VAR WORD      ' holds pulse time

TMR1H = 0
TMR1L = 0
T1CON = %11000001 ' TMR1 gate active-high, Fosc/4 clock, TMR1 on

Main: ' apply a pulse < 65536uS to TMR1 gate input GPIO.4 to use
  WHILE !GPIO.4 ' wait for high signal to trigger TMR1 gate pin
  WEND
  WHILE GPIO.4  ' wait for signal to return low (stops TMR1)
  WEND
  PVAL.LowByte = TMR1L  ' get TMR1 counts into PVAL
  PVAL.HighByte = TMR1H ' from TMR1
  TMR1H = 0             ' reset TMR1
  TMR1L = 0
  GOTO Main

  END