i think this is what ur looking for mate i used this in my degree switch mode power suppy project it measures up to 5 amps in 10mA steps
R1=39k, R2=47ohm, R3=13k, R4=220ohm, R5=1.5k, R6=1M, R7=100k, R8=3.3k, R9=15ohm, R10=56ohm, R11=100ohm, RS=0.1ohm 3watt. R1= 1k trimmer, D1=1n4148, D2=1n914, C1,4,9=47nf, C2=220nf, C5=10nf, C6=100nf, C7=100pf, C8=680pf, C3=100uf 16V electr, C10=10uf 16V electro, Q1=2sc945, U1=ICL7107, U2=LM7805 5V regulator
This runs 4 '7 seg displays'