double framing meaning

[Architecture]

Using twice the usual number of framing members to provide additional strength.

Examples

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1. spindle gauges for ring-spinning and ring doubling frames
2. rings for ring-spinning and ring-doubling frames
3. textile machinery and accessories-spindle gauges for ring-spinning and ring-doubling frames
4. textile machinery and accessories; spindle gauges for ring-spinning and ring-doubling frames; identical with iso 94, edition 1982
5. textile machinery and accessories-rings and travellers for ring spinning and ring doubling frames-t-rings and their appropriate travellers