Lab Report Example | Topics and Well Written Essays - 1000 words - 1

Lab Report Example Like any other laboratory experiments, reference is made to physical background of measurement tools and CAD version. Each tool requires an apt application to realize the most appropriate experimental results. In this section, vernier calipers and micrometer screw gauge were used to measure various dimensions of the Duplo block provided. In each case, these tools were aptly applied as described in the material attached to the laboratory manual. The Duplo block used in this experiment had a mixture of rectangular and circular shapes with internal and external diameters. With reference to manuals provided, the use of vernier calipers to determine internal and external dimensions of the various shapes on the Duplo block was studied. This is inclusive of evasion of any zero errors that might have occurred. Outer dimensions of circular, square and rectangular shapes on this block were determined by placing it between the lower jaws of the vernier calipers (Benedettelli, 2014). For inner dimensions, upper jaws clip inner surface of shapes measured and are screwed until they firmly hold. Measurements of depth are carried out using the movable head adjustable by the screw clamp whose shape and specifications differ for various vernier calipers. Once an object is in position, readings are made off systematically by determining initial significant figures by reading off values just to the left of vernier zero mark, along the main scale. The reading at which markings in vernier scale coincides with a division on main scale forms decimal readings. Thus, measurements on a vernier scale are usually expressed to two decimal place (Benedettelli, 2014). Relative to micrometers, measurements by vernier calipers are less precise. The use of ratchet knob, vernier scale and main scale of a micrometer was demonstrated as described in laboratory manuals. This instrument applies in