General Tools 837 Contour Gauge Duplicator, 6-Inch (837G)

Does the job, smooth operation

Good product, great for fine detail.Only advise, there’s nothing to stop the pins coming out either end, I learnt the hard way. Other than that, really well made.

Nice USA made product. Smooth action on the pins makes it easy to obtain an accurate profile and there is sufficient friction to hold them in place to transfer the outline to your chosen surface. The only minor issue was that the packaging was poor but it did arrive very quickly and was undamaged.

Really useful tool. So far it has been great. Pins are stiff enough to be useable but not impossible to move. Feels solid and like it should last a while. Recommended.

This profile gauge seems better made than the cheaper ones on the market. Unfortunately, the packaging was completely inadequate: it was sent loose in a poly mailing bag, with no bubble wrap or other padding. The blister pack had come apart and the pins in the profile gauge were splayed out and overlapping. Luckily, I was able to realign the pins and it doesn't seem to have suffered any permanent damage. Would have been nice to receive it intact though.

Good quality item, reasonably priced and difficult to obtain elsewhere.

This is utter rubbish.When you use it the pins bend and move around to the sides diagonally so you cannot get an accurate shape. There are not specific holes for the pins, that are all just shoved in the same gap and pins also fall out when you try to use it as there is nothing holding them in at all.I spent more time trying to straighten out the pins and put them all back in than doing my DIY job!Don’t waste your money!!!I cannot return this now as I had it to long before I needed to use it and it is too late for a refund even though it is not fit for purpose.I WANT MY MONEY BACK!

It definitely saves time and mistakes as the hole is always 5mm from the edge. Also, as it is clamped down, there is no chance of it moving during drilling - so great.But 2 demerits:1) The guide holes did not line up with the (Blum) hinges I was using. I don't know which manufacturer's hinges the guide holes are designed for.2) The design does not allow for certain 35mm drill bits to be used. I bought an expensive Bosch drill bit and the shaft changes diameter right at the point where the locking screw (to set the depth) locks in. So, if you want to use an alternative drill bit to the one provided (which does the job okay but will blunt), you will have to hunt around for one with a longer thick shaft section.