› Forums › Spectroscopy › Lhires111 › Reply To: Lhires111
14 March 2024 at 3:34 pm
#622200
![](https://britastro.org/wp-content/uploads/2017/01/picture-5979-1485519744-80x80.jpg)
Participant
Robin,
I can’t loosen the tiny crosshead grub screw which must be very tight.
Is there a particular type of screwdriver or extractor?
Regards,
Jack