You have two adjustment screws for up and down and right to left positions.
1	You	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	2	nsubj	2:nsubj	_
2	have	have	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	0	root	0:root	_
3	two	two	NUM	CD	NumForm=Word|NumType=Card	5	nummod	5:nummod	_
4	adjustment	adjustment	NOUN	NN	Number=Sing	5	compound	5:compound	_
5	screws	screw	NOUN	NNS	Number=Plur	2	obj	2:obj	_
6	for	for	ADP	IN	_	14	case	14:case	_
7	up	up	ADJ	JJ	Degree=Pos	14	amod	14:amod	_
8	and	and	CCONJ	CC	_	9	cc	9:cc	_
9	down	down	ADJ	JJ	Degree=Pos	7	conj	7:conj:and|14:amod	_
10	and	and	CCONJ	CC	_	11	cc	11:cc	_
11	right	right	ADJ	JJ	Degree=Pos	7	conj	7:conj:and|14:amod	_
12	to	to	ADP	IN	_	13	case	13:case	_
13	left	left	ADJ	JJ	Degree=Pos	11	obl	11:obl:to	_
14	positions	position	NOUN	NNS	Number=Plur	5	nmod	5:nmod:for	SpaceAfter=No
15	.	.	PUNCT	.	_	2	punct	2:punct	_
