Is there a name for encrypting a decimal number using a one time pad? I asked a question somewhere else on stack exchange and had to put something like "using the numerical one time pad the user can create their encrypted message by hand". Is there a better way of saying "numerical one time pad"?  

The following is an example of what I'm trying to describe:
key:                                 7 1 6 3 1 3
message:                             0 5 0 9 9 9
ciphertext = (message + key) mod 10: 7 6 6 2 0 2

Most OTP examples use mod 26, and most computer programs use mod 2 (XOR), but I'm trying to describe encrypting a decimal number specifically.
The correct names are OTLP (one time letter pad) and OTFP (one time figure pad). More about the system here:

http://users.telenet.be/d.rijmenants/en/onetimepad.htm