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Separating front and back pressure gauge

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Half centre	24/08/2020 17:02:07
32 forum posts 1 photos	Hi folks - I was wondering if anyone had any tips for separating the front and back of small pressure gauges. With the two I have the back slides into the front telescopically. This seems to be a very common fitting. The fit is very tight and I have yet to find an "easy" way to separate the two halves to enable me to mark the red line on the scale. Any thoughts gratefully received Martin
Zan	25/08/2020 11:11:04
356 forum posts 25 photos	Hold the outlet vertically in the vice. The mech is usually attached to the body “cup” then carefullyAnd gently punch the bezel off. Worked perfectly on all mine
Half centre	25/08/2020 18:52:03
32 forum posts 1 photos	Thanks Zan - That sounds an excellent idea - I will give it ago. Martin
Nigel Graham 2	26/08/2020 21:57:21
3293 forum posts 112 photos	Thank you both Half centre for asking, and Zan for replying: I am faced with the same difficulty! I think I would use a scrap of semi-rigid plastic or wood, possibly aluminium, as punch.
Half centre	27/08/2020 18:12:35
32 forum posts 1 photos	Just tried it and it worked a treat. Gentle tapping with a small hammer and an aluminium rod as a punch. Careful to move it around the circumference to get an even movement. Found 2 raised pips formed on the inner casing I presume deliberately to create grip. Sanded them a little flatter, grip still adequate but now far easier to separate. Thanks again Zan Martin

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