In cases where surface roughness needs to be measured with great precision, elaborate instruments must be used. These are expensive, and often unsuitable for workshop use, where roughness of machined surfaces can usually be assessed conveniently and with sufficient reliability using visual and tactile (fingernail) comparison with a standard set of surfaces machined in the same way. Rubert's range of Roughness Comparison Specimens can help in such cases. They are simple to use, inexpensive, and hence widely used in many different applications. The golden rule to follow, is to use comparison specimens which have been machined by the same process as the workpiece being checked.
This set consists of 30 comparison specimens, covering six of the most commonly-used machining methods: 6 cylindrically turned, 6 end-milled, 6 horizontally milled, 6 surface-ground, 3 lapped, 3 reamed/drilled. The label states the Ra values of each specimen in both metric and imperial units.
This handheld anemometer is ideal for outdoor activities such as model aircraft, sailing, surfing, hand-gliding, shooting and so on. It could not only provide you with maximum/minimum wind speed
measuring, but also LCD display with backlight, data hold function and auto power off functions.
? Measurement of Wind Velocity, Temperature and Flow
? 350 data store, data export to computer or online testing ( provide with PC software).
? Come with a bag for convenient carrying.
? LCD back light design for operation under poor illumination.
? High sensitive and accurate measuring, provides fast measurement for analysis of environment
? Ideal for outdoor activities such as model aircraft, sailing, surfing, hand-gliding, shooting and so on.
? Auto Turn of When not in use
? Data Holding, Storage and Deleting Function
? Unit Conversion of Wind Velocity, Temperature and Flow
Tyre depth gauge could examine a range of 0-25.4mm/1inch depth with 0.01mm accuracy
The extra ZERO setting makes the gauge more accurate to measure. Easy to Read
Digital LCD screen display makes it easier and clear to read And suitable for inch and mm, you could change the system with one-touch of the button. Durable
Tread depth checker is designed with ABS plastic body and stainless steel needle, corrosion and wear resistant. Digital automatic display, convenient and easy to use. Suitable for motorcycles, trucks and sport utility vehicles.
laser meter is very easy to use. One button operation , one key to measure.
Easily measure hard-to-access areas like high ceilings without climbing a
ladder. Large LCD with backlight and multi-line display, provides you with a
better visibility in dark areas with this home depot electric tape measure.
Portable compare size, allow you take it to anywhere that you need. There are
two photosensitive holes and a large optical lens. During the measurement
process, the light transmittance is increased by 50%, and the response time is
0.5s. It can better withstand strong light interference and can still be
clearly read under external sunlight Compared with other laser measurement, it
provides more stable and accurate measurement. Based on measured Length, width
and height, gets you smart volume and area calculations, no need of manual