image scale? 
ll 
nswered 8 
longitudinal 
ues 1 
red 6 
ues 
red 
   
  
   
- 109 . 
3.15 Are there fixed tolerances for tilt? 
28 13 58 6 No 4 
38 24 65 4 Not answered 8 
48 4 
3.16 Are there fixed tolerances for blur ? 
0,01 mm 2 0.10 mm 2 
0,02 mm 8 Other values 8 
0,03 mm 3 No 16 
0,05 mm 8 Not answered 16 
3.21 Are there fixed tolerances for density, gamma and contrast? 
Yes 22 
No 35 
Not answered 6 
3.25a Are all photographs checked for image quality? 
Yes 32 
No 24 
Not answered 7 
3.25b What proportion of total is checked? 
5% 5 60 X 1 None 1 
10 % 8 80 % 2 Not answered 10 
20% 4 so % 
50 % 1 100 %