To hold the centerline on the workpiece will help the device shown in the figure.
Recommend to read
“NUMBERED” ON THE BRANCH
Lovers of flowers and gardeners is often necessary to mark the plants or seedlings, not to forget where what was sown-planted. Such tag-number plates can be cut from the modern packages...
WIND ROMASHKA
Water supply is an acute problem for many novice members of garden cooperatives, owners of household plots. To supply water from local sources using fuel or electric pumps it...