BTUR-101 (0-70 rpm)
BTUR-102 (10-70 rpm)
BTUR-103 (10-80 rpm)
BTUR-104 (10-80 rpm)
BTUR-201 (0-80 rpm)
BTUR-202 (10-70 rpm)
BTUR-203 (0-80 rpm)
BTUR-204 (10-70 rpm)
BTUR-301 (18 rpm)
BTUR-302 (10-40 rpm)
BTUR-303 (1-99 rpm)
BTUR-304 (20 rpm (fixed))