Parts list:
 
 Ref Des   Value     Name      Desc      Qty       
 --------------------------------------------------
 PL1                 10WHDR    10 way Pin Header  1
 --------------------------------------------------
 PL4                 1WP       Single Pin Header  13
 PL5
 PL6
 PL7
 PL8
 PL9
 PL10
 PL11
 PL12
 PL13
 PL14
 PL15
 PL16
 --------------------------------------------------
 Q1                  BC547     NPN Bipolar  2
 Q2
 --------------------------------------------------
 Q3                  BC557     PNP Bipolar  2
 Q4
 --------------------------------------------------
 U1                  CA3140    BiMOS Op Amp  1
 --------------------------------------------------
 D1                  D         Diode     2 – these are 1N4148
 D2
 --------------------------------------------------
 C3        100n      myC       Capacitor  3
 C4        100n
 C5        100n
 --------------------------------------------------
 C1        10u       myCP                2
 C2        10u
 --------------------------------------------------
 R1        180       RA        Resistor (USA type)  10
 R2        3.9k
 R3        3.9k
 R4        18k
 R6        5.6k
 R7        5.6k
 R9        180k
 R11       180k
 R13       20k
 R14       10Meg
 --------------------------------------------------
 R5        5k        RA_PREC   Preset Potentiometer(USA)  4
 R8        50k
 R10       50k
 R12       5k
 --------------------------------------------------
 U2                  TL082     Dual BIFET Op Amp  1
 --------------------------------------------------
  
 Notes:
 
 R8, R10, R12 presets are for adjusting the voltage ranges (1V, 5V, 10V).
 R5 is for the current overload LED lighting point
 R1 to suit illumination LEDs
 R6, R7 to suit overload LEDs
 
 The ‘single pin headers’ are just a means to show where connections need to be made to the PCB – in reality I just used a flying lead from whatever device, soldered in, and not actually a pin! (though it could be done that way!)
 
 The range switch is an on-off-on type, so that in the '1V' and '5V' positions extra resistors are paralled with the pair R8 & R9 always wired through for the '10V' default ('off') setting.
 
 I haven’t shown the overload LEDs as they are not on the main PCB, but cobbled together with the illumination LEDs (also not shown – but 8 white ones used in series) on a separate small piece of stripboard. The direction of them all should be obvious!
 
 T.E.Stinchcombe 25 April 2009