High sensitivity check of surface contamination by β-ray 

　and soft X-ray 
 ・ 2 inchφGM detector  
 ・ Measure X-ray, γ-ray and β-ray of radioactive Cs and K. 
 ・ A time base range is 10-99,999CPM. 
 ・ Measuring time 30ｓ, 1, 10min, Free
 ・ Weight   Approx.  540 gr

 ・ Size 210(L)×85(D)×45(H)mm

 ・ 3 AA alkaline batteries using