Best Hole Gauges
Range: 5/16" - 6" (8mm to 150mm), 6 pc set includes: 1 gage: 5/16 - 1/2" range x 4.20" overall. 1 gage: 1/2 - 3/4" range x 4.40" overall. 1 gage: 3/4 - 1-1/4" range x 4.40" overall. 1 gage: 1-1/4 - 2-1/8" range x 5.85" overall. 1 gage: 2-1/8 - 3-1/2" range x 5.85" overall. 1 gage: 3-1/2 - 6" range x 5.85" overall. Spring loaded with locking knurled knob. Stainless Steel Construction. Gage expands in a hole to be measured (locks in place and then removed to determine final hole size using a micrometer or calipers).
Reviews
Find Best Price at Amazon"They work as designed."
"its ok ,u get what you paid for."
"Excellent Quality For Price."
"What can you expect for $20 bucks..."
"Cheap price but do work pretty good if you pay attention to what you are doing."
The four gauges measure from 5/16 to 1/2", 1/2 to 3/4", 3/4 to 1-1/4", 1-1/4 to 2-1/8", 2-1/8 to 3-1/2", and 3-1/2 to 6". (6) piece telescoping gauge set Protective case. The final hole size is obtained by measuring over the gage contacts with a micrometer. Set of six telescoping gauges for measuring holes, slots, and recesses in woodworking, metalworking, machining, layout, and pattern-making applications. Constant spring tension gives uniform contact pressure.
Reviews
Find Best Price at Amazon"Starrett tools are known to be great quality tools and one pays up to hold that quality."
"I imagine that if I had the chops to work in tenths, these gauges would not hold me back."
"Excellent quality."
"Use these everyday very nice quality excellent feel."
"Best stuff on the market."
"No frills just does what it's supposed to do."
"Seems that they are of sufficient quality, but these telescope gauges are not manufactured in the USA."
"Got the replacement, opened the box, and there sits the spring and one of the ends of the smallest gauge!"
Mitutoyo Telescoping Gage Set, Range: 5/16" to 2-1/8", Number of Pieces in Set: 4.
Reviews
Find Best Price at Amazon"Excellent tools, maybe a bit on the expensive side but they are very smooth to use and repeatable."
Best Bore Gauges
Bore gauges are typically calibrated with a setting ring and come in two types: simple and direct-measuring. Simple bore gauges are used with a caliper to transfer the hole measurement, while the more complex gauges take the measurement directly, and display it through a vernier, dial, or digital display. Bore gauges have a two- or three-point contact, indicating how many points on the gauge head touch the inside of the bore. Pistol-grip bore gauges are used for fast, single-handed operation with repeatable results from one operator to another.
Reviews
Find Best Price at Amazon"There is a red sticker on the front of the box that says "Check instructions for quantity of anvils", but the instructions are very unclear about how many are supposed to be included and where they are stored."
"However, there is not much label indicating it's a Fowler other than the indicator."
"Nice Bore gauge, As noted elsewhere there should be 3 blank spaces for the anvils, the 2 smallest of each type are shipped fitted to the heads, one (the longest) is not there in the inch set = 3 blank spaces."
"Instructions could be clearer."
"You need an additional caliber to set the base measuring point and it will then give you the difference between the base and what you are measuring."
"Does a very good job for what I need it for."
"Good piece and helped my engine build."
"Update to original review below: After returning the instrument described below, I bought Fowler's 52-646-500 which has much better accuracy and appears to be suitable for engine work. Would be nice if Fowler or Amazon were aboveboard and honestly and OPENLY disclosed in the advertising that the accuracy of this gauge is only plus or minus .0009 inches, and repeatability is only guaranteed to be within plus or minus .0004 inches which values essentially make this "measuring" tool useless for any actual precision work on a modern engine where, say, the allowed out of round is .0004!!"
Best Chamfer Gauges
Hardened and Precision ground 3-Blade steel plunger assures High accuracy and repeatability.
Reviews
Find Best Price at Amazon"Recieved as expected."
Best Countersink Gauges
Starrett Countersink Gauges are offered in three different angles so that the gauge sets on the angular side of the countersink, as opposed to a chamfer gauge which sets on the top edge of the chamfer.
Find Best Price at AmazonBest Inside Micrometers
Style: Standard. Electromagnetic Absolute sensor with improved resistance to environmental conditions such as dirt, oil and water that can cause false readings.
Reviews
Find Best Price at Amazon"This is the gold standard of digital micrometers."
"Great tool very well made, exactly as advertised."
"Not bad for an electronic device."