Tüzérségi zseblogarléc
Description
This rule was made for the Hungarian People's Army, and has special sine and tangent scales for solving ballistic calculations in mils (6000 mil = 360°). The rule was almost identical to the type 1252, but the bigger holes on the back haven't indices, so the back scales on the slide can only be used when the slide is inverted.
Manufacturer: | Gamma Finommechanikai és Optikai Múvek N. V. (Hungary) |
Mfg. date: | 1950-51 |
Size: | 152×34×10 mm |
Purpose: | artillery slide rule |
Material: | body: pearwood scales: celluloid |
Scale length: | 12,5 cm (5-inch) |
Scale order: | special front: cm / Dh | Sv Tv C | D back: | S0v C | |
Window: | plastic with 1 index |