turnbuckle

लामो धातु जोडनी, एक छेउमा घुम्ने जोड र अर्कोमा भित्री पेच; पेचदार डन्डी लगाएर लम्बाइ वा कसावट मिलाउन सकिन्छ

an oblong metal coupling with a swivel at one end and an internal thread at the other into which a threaded rod can be screwed in order to form a unit that can be adjusted for length or tension