(1) What does an odograph measure?
Answer: Distance.
(2) What is a pseudepigraph?
Answer: A falsely attributed artwork or text.
(3) What is a cryptograph?
Answer: A system of secret writing, or cypher.
(4) What is a serigraph?
Answer: A silkscreen print.
(5) What is a heliograph?
Answer: A device for sending messages by reflecting sunlight (or for imaging the sun).