Actually they have same function and same shape.
But the main difference is rapidograph uses a capillary cartridge to refill the ink while isograph uses a refillable ink reservoir
WHat is the difference between polyheron and platonic solid
what is the difference between brushed nickel and granite
What is the deference between Insertion Point and Pointers?
difference between 2d and 3d transformation matrix
one third of the difference between ten and a number
One can find ink for a rapidograph pen on Amazon and Ebay. As well, ink for rapidograph pens can be found at specialized stores including Dickblink, Misterart, Hyatts, and Art Bistro.
"Radiograph," in the case of pens, is a misnomer for the "Rapidograph" pen, made by the Koh-I-Noor company of Germany. The Rapidograph is a refillable "technical" pen used for drafting and other precision drawing. The Rapidograph comes in 7 nib sizes, from .17mm to 1.5mm
architectural drafting.
Rapidograph
Isotherm, isotopes, isograph, isolation, isometry, isopod, isotype.
isobar isograph isothermally alot of words mostly in science start with "iso"
difference between as on and as at
What is the difference between Florida and California What is the difference between Florida and California
what's the difference between physician and doctorwhat's the difference between physician and doctor what's the difference between physician and doctor
Difference between paging and what?
difference between enterprise and corporation
The difference between a shogun and a samurai is like the difference between a king and a knight.