DT GK today

[jeremykayp]

Last one, 19d, A device for regulating the degree of thread tautness in a sewing machine, (7) T_N_I_N. TENSION fits, but is not to my mind a device! Please help. Thanks in advance for the solution.

[bibblebub]

http://dictionary.reference.com/browse/TENSION

defn 8: Machinery . a device for stretching or pulling something.
defn 9: a device to hold the proper tension on the material being woven in a loom.

so looks likely

[jeremykayp]

Thanks very much!