Custom made 2" crayford with teflon slides and 3:1 reduction.
Has extra large knobs, 3 inches of travel and a 2" to 1.25" adapter.
Very smooth! Would make an awesome addition to your big Dob! Just put your finger in depression for rapid course focus. then fine focus normally.
Will check email daily, and will respond as soon as I can.
$115.00 I will pay shiping CONT USA
Postal Money Order or Personal Check ok!