Technical Pan, as well as Kodak Ortho Lith, Agfa Ortho, is a high contrast film with a Dmax above 4. They are intented for line work not for continous tone. A straight developer as used as a replenished system by most labs will give a gamma value way above one.(posted 8836 days ago)BUT combined with special commercial developers like e.g. Kodak Technidol or Tetenal Dokufin these films can be used for halftone pictures, with gamma value around 0.5-0.7. These developers are pricey, so alternatives are Agfa Rodinal 1:150-200 for around 7-8 mins with only little agaition and Kodak Xtol document lists dilution, speed and time for Technical pan, I think it was 1:6, not sure.
In Rodinal I rate Technical Pan at 25 ASA, Kodak Ortho Lith at 12 ASA. 3 ml Rodinal for 2 films is also very cheap!
BTW, Technical Pan has a slighly extended red sensitivity, while Ortho Lith, well it is in the name, does not respond to red light at all. Both have a Dmin below 0.1, so negatives have to look thinner, since 2/3 of the base fog is missing.
Regards,
Wolfram