Customized version of http://www.thingiverse.com/thing:1253190

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=1253190

Using the following options:

font = 0
screw_size = 3
digit_duration = 60
space_between_rows = 7.5
space_between_digits = 3
enlarge_slots = 2
pixel_width = 6
transition = 10
space_between_columns = 1.5
remove_thin_parts = 0
rod = 4
holder = 1
text = 7;8;9;10;11;12;1;2;3;4;5.
gnomon_radius = 25
gnomon_shape = 1
hemisphere = 0
pixel_height = 1.5